[INFO] crate rawkey 0.1.1 is already in cache
[INFO] extracting crate rawkey 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/rawkey/0.1.1
[INFO] extracting crate rawkey 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rawkey/0.1.1
[INFO] validating manifest of rawkey-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rawkey-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rawkey-0.1.1
[INFO] finished frobbing rawkey-0.1.1
[INFO] frobbed toml for rawkey-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rawkey/0.1.1/Cargo.toml
[INFO] started frobbing rawkey-0.1.1
[INFO] finished frobbing rawkey-0.1.1
[INFO] frobbed toml for rawkey-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rawkey/0.1.1/Cargo.toml
[INFO] crate rawkey-0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rawkey-0.1.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rawkey/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ca787d0501b317d43b84624f06698fe2cfe235683c4c24cd25fb7ba4b5c8cb5e
[INFO] running `"docker" "start" "-a" "ca787d0501b317d43b84624f06698fe2cfe235683c4c24cd25fb7ba4b5c8cb5e"`
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling rawkey v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `keycodes`
[INFO] [stderr]   --> src/linux.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut keycodes: Vec<u64> = vec![];
[INFO] [stderr]    |                 ^^^^^^^^ help: consider prefixing with an underscore: `_keycodes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/linux.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut keycodes: Vec<u64> = vec![];
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.63s
[INFO] running `"docker" "inspect" "ca787d0501b317d43b84624f06698fe2cfe235683c4c24cd25fb7ba4b5c8cb5e"`
[INFO] running `"docker" "rm" "-f" "ca787d0501b317d43b84624f06698fe2cfe235683c4c24cd25fb7ba4b5c8cb5e"`
[INFO] [stdout] ca787d0501b317d43b84624f06698fe2cfe235683c4c24cd25fb7ba4b5c8cb5e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rawkey/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] de92d25405cc7fa137def935e30c1237575243dd30f636a016b3eac1c460a4b1
[INFO] running `"docker" "start" "-a" "de92d25405cc7fa137def935e30c1237575243dd30f636a016b3eac1c460a4b1"`
[INFO] [stderr]    Compiling rawkey v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/showkey.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut rawkey = RawKey::new();
[INFO] [stderr]   |         ----^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keycodes`
[INFO] [stderr]   --> src/linux.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut keycodes: Vec<u64> = vec![];
[INFO] [stderr]    |                 ^^^^^^^^ help: consider prefixing with an underscore: `_keycodes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/linux.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut keycodes: Vec<u64> = vec![];
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "de92d25405cc7fa137def935e30c1237575243dd30f636a016b3eac1c460a4b1"`
[INFO] running `"docker" "rm" "-f" "de92d25405cc7fa137def935e30c1237575243dd30f636a016b3eac1c460a4b1"`
[INFO] [stdout] de92d25405cc7fa137def935e30c1237575243dd30f636a016b3eac1c460a4b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rawkey/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] c51f1748cae02e93d5b2c5c02e05d1dfbfcc0e41c4f3683e79f30f832b63f21a
[INFO] running `"docker" "start" "-a" "c51f1748cae02e93d5b2c5c02e05d1dfbfcc0e41c4f3683e79f30f832b63f21a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rawkey-416df0c56b192b71
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rawkey
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c51f1748cae02e93d5b2c5c02e05d1dfbfcc0e41c4f3683e79f30f832b63f21a"`
[INFO] running `"docker" "rm" "-f" "c51f1748cae02e93d5b2c5c02e05d1dfbfcc0e41c4f3683e79f30f832b63f21a"`
[INFO] [stdout] c51f1748cae02e93d5b2c5c02e05d1dfbfcc0e41c4f3683e79f30f832b63f21a