[INFO] crate random_color 0.4.4 is already in cache
[INFO] extracting crate random_color 0.4.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/random_color/0.4.4
[INFO] extracting crate random_color 0.4.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/random_color/0.4.4
[INFO] validating manifest of random_color-0.4.4 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 random_color-0.4.4 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 random_color-0.4.4
[INFO] finished frobbing random_color-0.4.4
[INFO] frobbed toml for random_color-0.4.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/random_color/0.4.4/Cargo.toml
[INFO] started frobbing random_color-0.4.4
[INFO] finished frobbing random_color-0.4.4
[INFO] frobbed toml for random_color-0.4.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/random_color/0.4.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] testing random_color-0.4.4 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/random_color/0.4.4:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cfcea8a7f4a9cc4595ef94ba928bd7fd4674fcbc1a77ab32fffeaab4e49e3f29
[INFO] running `"docker" "start" "-a" "cfcea8a7f4a9cc4595ef94ba928bd7fd4674fcbc1a77ab32fffeaab4e49e3f29"`
[INFO] [stderr]    Compiling random_color v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:226:21
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 let mut rnd = seed / 233280;
[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 0.35s
[INFO] running `"docker" "inspect" "cfcea8a7f4a9cc4595ef94ba928bd7fd4674fcbc1a77ab32fffeaab4e49e3f29"`
[INFO] running `"docker" "rm" "-f" "cfcea8a7f4a9cc4595ef94ba928bd7fd4674fcbc1a77ab32fffeaab4e49e3f29"`
[INFO] [stdout] cfcea8a7f4a9cc4595ef94ba928bd7fd4674fcbc1a77ab32fffeaab4e49e3f29
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/random_color/0.4.4:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 11630281b4f8e7dea1a6fc5937bb75d2b17b8060768509b613bbb9ee1212720c
[INFO] running `"docker" "start" "-a" "11630281b4f8e7dea1a6fc5937bb75d2b17b8060768509b613bbb9ee1212720c"`
[INFO] [stderr]    Compiling random_color v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:226:21
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 let mut rnd = seed / 233280;
[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 0.55s
[INFO] running `"docker" "inspect" "11630281b4f8e7dea1a6fc5937bb75d2b17b8060768509b613bbb9ee1212720c"`
[INFO] running `"docker" "rm" "-f" "11630281b4f8e7dea1a6fc5937bb75d2b17b8060768509b613bbb9ee1212720c"`
[INFO] [stdout] 11630281b4f8e7dea1a6fc5937bb75d2b17b8060768509b613bbb9ee1212720c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/random_color/0.4.4:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] ceb4e8ff8057a3e841f225bb2bb761e2c42818909136f5a1227b6afc8e6cd274
[INFO] running `"docker" "start" "-a" "ceb4e8ff8057a3e841f225bb2bb761e2c42818909136f5a1227b6afc8e6cd274"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/random_color-6af7679ca6a69d58
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::generates_color_as_hsl_array ... ok
[INFO] [stdout] test tests::generates_color_as_hsl_string ... ok
[INFO] [stdout] test tests::generates_color_as_hex ... ok
[INFO] [stdout] test tests::accept_values ... ok
[INFO] [stdout] test tests::generates_color_as_hsla_string ... ok
[INFO] [stdout] test tests::generates_color_as_hsv_array ... ok
[INFO] [stdout] test tests::generates_color_as_rgb_array ... ok
[INFO] [stdout] test tests::generates_color_as_rgb_string ... ok
[INFO] [stdout] test tests::generates_color_as_rgba_string ... ok
[INFO] [stdout] test tests::to_hex_is_rrggbb ... ok
[INFO] [stdout] test tests::single_digit_hex_are_padded_by_to_two_chars ... ok
[INFO] [stderr]    Doc-tests random_color
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ceb4e8ff8057a3e841f225bb2bb761e2c42818909136f5a1227b6afc8e6cd274"`
[INFO] running `"docker" "rm" "-f" "ceb4e8ff8057a3e841f225bb2bb761e2c42818909136f5a1227b6afc8e6cd274"`
[INFO] [stdout] ceb4e8ff8057a3e841f225bb2bb761e2c42818909136f5a1227b6afc8e6cd274