indeterminable error

[BartTerpstra]

first time using spacemacs, comes bundled with this racer.
I got this error and i can't make heads or tails of it.
name == censored account name

$ cd /home/name/programs/Rust/adventOfCode/
$ export CARGO_HOME=/home/name/.cargo
$ export RUST_SRC_PATH=/home/name/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library
$ /home/name/.cargo/bin/racer complete 36 9 /home/name/programs/Rust/adventOfCode/src/main.rs /tmp/racerNt0W6y

This command terminated with exit code 127.

No output on stdout.

No output on stderr.

The temporary file will have been deleted. You should be
able to reproduce the same output from racer with the
following command:

$ CARGO_HOME=/home/name/.cargo RUST_SRC_PATH=/home/name/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library /home/name/.cargo/bin/racer complete 36 9 /home/name/programs/Rust/adventOfCode/src/main.rs