[INFO] fetching crate color_counter 0.2.3...
[INFO] testing color_counter-0.2.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate color_counter 0.2.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate color_counter 0.2.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate color_counter 0.2.3
[INFO] finished tweaking crates.io crate color_counter 0.2.3
[INFO] tweaked toml for crates.io crate color_counter 0.2.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate color_counter 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded png v0.15.0
[INFO] [stderr]   Downloaded either v1.5.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.1
[INFO] [stderr]   Downloaded gif v0.10.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.2.2
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded inflate v0.4.4
[INFO] [stderr]   Downloaded color_processing v0.4.1
[INFO] [stderr]   Downloaded rayon-core v1.4.1
[INFO] [stderr]   Downloaded deflate v0.7.19
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded num-derive v0.2.4
[INFO] [stderr]   Downloaded rayon v1.0.3
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.15
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded crossbeam-deque v0.2.0
[INFO] [stderr]   Downloaded image v0.22.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d53f3e7619bc0343a68a029afdf3b7a21b68ce63a04b75bd1198768d178021c
[INFO] running `Command { std: "docker" "start" "-a" "5d53f3e7619bc0343a68a029afdf3b7a21b68ce63a04b75bd1198768d178021c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d53f3e7619bc0343a68a029afdf3b7a21b68ce63a04b75bd1198768d178021c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d53f3e7619bc0343a68a029afdf3b7a21b68ce63a04b75bd1198768d178021c", kill_on_drop: false }`
[INFO] [stdout] 5d53f3e7619bc0343a68a029afdf3b7a21b68ce63a04b75bd1198768d178021c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf7c887343bbefa73b55dcd6a0095c0c2fd4ee69c278ba12abd8b508b3a7e205
[INFO] running `Command { std: "docker" "start" "-a" "bf7c887343bbefa73b55dcd6a0095c0c2fd4ee69c278ba12abd8b508b3a7e205", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling inflate v0.4.4
[INFO] [stderr]    Compiling gif v0.10.1
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling png v0.15.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling color_processing v0.4.1
[INFO] [stderr]    Compiling tiff v0.3.1
[INFO] [stderr]    Compiling image v0.22.3
[INFO] [stderr]    Compiling color_counter v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.65s
[INFO] running `Command { std: "docker" "inspect" "bf7c887343bbefa73b55dcd6a0095c0c2fd4ee69c278ba12abd8b508b3a7e205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7c887343bbefa73b55dcd6a0095c0c2fd4ee69c278ba12abd8b508b3a7e205", kill_on_drop: false }`
[INFO] [stdout] bf7c887343bbefa73b55dcd6a0095c0c2fd4ee69c278ba12abd8b508b3a7e205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe3a053a789fb3a26bc12d1bff236d450f68090ee577e40730ecd2ec9e06298b
[INFO] running `Command { std: "docker" "start" "-a" "fe3a053a789fb3a26bc12d1bff236d450f68090ee577e40730ecd2ec9e06298b", kill_on_drop: false }`
[INFO] [stderr]    Compiling color_counter v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "fe3a053a789fb3a26bc12d1bff236d450f68090ee577e40730ecd2ec9e06298b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe3a053a789fb3a26bc12d1bff236d450f68090ee577e40730ecd2ec9e06298b", kill_on_drop: false }`
[INFO] [stdout] fe3a053a789fb3a26bc12d1bff236d450f68090ee577e40730ecd2ec9e06298b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 70b2e1b098df24ab0fa0445780ad1de02461c1a1c1f6c6554de95078498907ef
[INFO] running `Command { std: "docker" "start" "-a" "70b2e1b098df24ab0fa0445780ad1de02461c1a1c1f6c6554de95078498907ef", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/color_counter-874a60742a15f481)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test space::tests::test_color_freq ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.90s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/color_counter-45cd20f6a8276371)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests color_counter
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "70b2e1b098df24ab0fa0445780ad1de02461c1a1c1f6c6554de95078498907ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b2e1b098df24ab0fa0445780ad1de02461c1a1c1f6c6554de95078498907ef", kill_on_drop: false }`
[INFO] [stdout] 70b2e1b098df24ab0fa0445780ad1de02461c1a1c1f6c6554de95078498907ef