[INFO] crate xidlehook 0.7.1 is already in cache
[INFO] extracting crate xidlehook 0.7.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/xidlehook/0.7.1
[INFO] extracting crate xidlehook 0.7.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/xidlehook/0.7.1
[INFO] validating manifest of xidlehook-0.7.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of xidlehook-0.7.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing xidlehook-0.7.1
[INFO] finished frobbing xidlehook-0.7.1
[INFO] frobbed toml for xidlehook-0.7.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/xidlehook/0.7.1/Cargo.toml
[INFO] started frobbing xidlehook-0.7.1
[INFO] finished frobbing xidlehook-0.7.1
[INFO] frobbed toml for xidlehook-0.7.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/xidlehook/0.7.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing xidlehook-0.7.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/xidlehook/0.7.1:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] edfbd8fafdeb0e8db8fb4a06cd141fed870fc29610d2776ee3c31f8e56829d22
[INFO] running `"docker" "start" "-a" "edfbd8fafdeb0e8db8fb4a06cd141fed870fc29610d2776ee3c31f8e56829d22"`
[INFO] [stderr]    Compiling libpulse-sys v1.5.0
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling xidlehook v0.7.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:257:17
[INFO] [stderr]     |
[INFO] [stderr] 257 |             let mut listener = UnixListener::bind(&socket)?;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:299:26
[INFO] [stderr]     |
[INFO] [stderr] 299 |                     let (mut socket, _) = match maybe(listener.accept())? {
[INFO] [stderr]     |                          ----^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.53s
[INFO] running `"docker" "inspect" "edfbd8fafdeb0e8db8fb4a06cd141fed870fc29610d2776ee3c31f8e56829d22"`
[INFO] running `"docker" "rm" "-f" "edfbd8fafdeb0e8db8fb4a06cd141fed870fc29610d2776ee3c31f8e56829d22"`
[INFO] [stdout] edfbd8fafdeb0e8db8fb4a06cd141fed870fc29610d2776ee3c31f8e56829d22
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/xidlehook/0.7.1:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1d51ab737318c80629af0a538e14154d02f20d1a92b6ee81b0aa80d0227e782b
[INFO] running `"docker" "start" "-a" "1d51ab737318c80629af0a538e14154d02f20d1a92b6ee81b0aa80d0227e782b"`
[INFO] [stderr]    Compiling xidlehook v0.7.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:257:17
[INFO] [stderr]     |
[INFO] [stderr] 257 |             let mut listener = UnixListener::bind(&socket)?;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:299:26
[INFO] [stderr]     |
[INFO] [stderr] 299 |                     let (mut socket, _) = match maybe(listener.accept())? {
[INFO] [stderr]     |                          ----^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "1d51ab737318c80629af0a538e14154d02f20d1a92b6ee81b0aa80d0227e782b"`
[INFO] running `"docker" "rm" "-f" "1d51ab737318c80629af0a538e14154d02f20d1a92b6ee81b0aa80d0227e782b"`
[INFO] [stdout] 1d51ab737318c80629af0a538e14154d02f20d1a92b6ee81b0aa80d0227e782b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/xidlehook/0.7.1:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 383cf6d46b91799cbe5750381749d7e17c78d2675db29fed7fcfec292b3f2053
[INFO] running `"docker" "start" "-a" "383cf6d46b91799cbe5750381749d7e17c78d2675db29fed7fcfec292b3f2053"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/xidlehook-ed556986d60805b6
[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]      Running /opt/crater/target/debug/deps/xidlehook_client-0573a278abd8b861
[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" "383cf6d46b91799cbe5750381749d7e17c78d2675db29fed7fcfec292b3f2053"`
[INFO] running `"docker" "rm" "-f" "383cf6d46b91799cbe5750381749d7e17c78d2675db29fed7fcfec292b3f2053"`
[INFO] [stdout] 383cf6d46b91799cbe5750381749d7e17c78d2675db29fed7fcfec292b3f2053