[INFO] crate grmr 0.2.0 is already in cache
[INFO] extracting crate grmr 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/grmr/0.2.0
[INFO] extracting crate grmr 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/grmr/0.2.0
[INFO] validating manifest of grmr-0.2.0 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 grmr-0.2.0 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 grmr-0.2.0
[INFO] finished frobbing grmr-0.2.0
[INFO] frobbed toml for grmr-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/grmr/0.2.0/Cargo.toml
[INFO] started frobbing grmr-0.2.0
[INFO] finished frobbing grmr-0.2.0
[INFO] frobbed toml for grmr-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/grmr/0.2.0/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 grmr-0.2.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/grmr/0.2.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] d6a18c3d47b6be6e29e3781bf0b938ccef5e6d1fbaf61a5d3d064f6fbb2f9939
[INFO] running `"docker" "start" "-a" "d6a18c3d47b6be6e29e3781bf0b938ccef5e6d1fbaf61a5d3d064f6fbb2f9939"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling grmr v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 let mut file = File::open(path_cleaned)?;
[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 5.34s
[INFO] running `"docker" "inspect" "d6a18c3d47b6be6e29e3781bf0b938ccef5e6d1fbaf61a5d3d064f6fbb2f9939"`
[INFO] running `"docker" "rm" "-f" "d6a18c3d47b6be6e29e3781bf0b938ccef5e6d1fbaf61a5d3d064f6fbb2f9939"`
[INFO] [stdout] d6a18c3d47b6be6e29e3781bf0b938ccef5e6d1fbaf61a5d3d064f6fbb2f9939
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/grmr/0.2.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c80e76bc009aaed0b496cf3645eea71105bcae97e8d746171f04cb20e3b05deb
[INFO] running `"docker" "start" "-a" "c80e76bc009aaed0b496cf3645eea71105bcae97e8d746171f04cb20e3b05deb"`
[INFO] [stderr]    Compiling grmr v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 let mut file = File::open(path_cleaned)?;
[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 1.65s
[INFO] running `"docker" "inspect" "c80e76bc009aaed0b496cf3645eea71105bcae97e8d746171f04cb20e3b05deb"`
[INFO] running `"docker" "rm" "-f" "c80e76bc009aaed0b496cf3645eea71105bcae97e8d746171f04cb20e3b05deb"`
[INFO] [stdout] c80e76bc009aaed0b496cf3645eea71105bcae97e8d746171f04cb20e3b05deb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/grmr/0.2.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 966d07b4854bb2935d2dced585c5803006775ef5e0084e65243105507c555c5d
[INFO] running `"docker" "start" "-a" "966d07b4854bb2935d2dced585c5803006775ef5e0084e65243105507c555c5d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/grmr-eb29da3a2b993e5f
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test checkers::dups::tests::simple_word_annotation ... ok
[INFO] [stdout] test checkers::dups::tests::word_annotation_empty_words ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "966d07b4854bb2935d2dced585c5803006775ef5e0084e65243105507c555c5d"`
[INFO] running `"docker" "rm" "-f" "966d07b4854bb2935d2dced585c5803006775ef5e0084e65243105507c555c5d"`
[INFO] [stdout] 966d07b4854bb2935d2dced585c5803006775ef5e0084e65243105507c555c5d