[INFO] fetching crate huffman_rs 0.1.0...
[INFO] testing huffman_rs-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate huffman_rs 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate huffman_rs 0.1.0 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 huffman_rs 0.1.0
[INFO] finished tweaking crates.io crate huffman_rs 0.1.0
[INFO] tweaked toml for crates.io crate huffman_rs 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 773ce06c899f135ead993493743db568f77c93f0d524e5fa3ba3287ae35cd486
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "773ce06c899f135ead993493743db568f77c93f0d524e5fa3ba3287ae35cd486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "773ce06c899f135ead993493743db568f77c93f0d524e5fa3ba3287ae35cd486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773ce06c899f135ead993493743db568f77c93f0d524e5fa3ba3287ae35cd486", kill_on_drop: false }`
[INFO] [stdout] 773ce06c899f135ead993493743db568f77c93f0d524e5fa3ba3287ae35cd486
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8079ad5ef40c9efbc5383ddd94f8a1a5d35592bd2821e99131c1ab89b927c6e5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8079ad5ef40c9efbc5383ddd94f8a1a5d35592bd2821e99131c1ab89b927c6e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "8079ad5ef40c9efbc5383ddd94f8a1a5d35592bd2821e99131c1ab89b927c6e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8079ad5ef40c9efbc5383ddd94f8a1a5d35592bd2821e99131c1ab89b927c6e5", kill_on_drop: false }`
[INFO] [stdout] 8079ad5ef40c9efbc5383ddd94f8a1a5d35592bd2821e99131c1ab89b927c6e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0c8b42139bec2ef46e781bf8f25874b47978dc7ca892ed91eaa4dd98ccd08e4c
[INFO] running `Command { std: "docker" "start" "-a" "0c8b42139bec2ef46e781bf8f25874b47978dc7ca892ed91eaa4dd98ccd08e4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "0c8b42139bec2ef46e781bf8f25874b47978dc7ca892ed91eaa4dd98ccd08e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c8b42139bec2ef46e781bf8f25874b47978dc7ca892ed91eaa4dd98ccd08e4c", kill_on_drop: false }`
[INFO] [stdout] 0c8b42139bec2ef46e781bf8f25874b47978dc7ca892ed91eaa4dd98ccd08e4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 10fa41615b7c96c7b462f9709c242c5dbd5f190d6fd48033072491d0e108bf6c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "10fa41615b7c96c7b462f9709c242c5dbd5f190d6fd48033072491d0e108bf6c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/huffman_rs-3e8e8135cfe7c691)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test huffman::huffman_encoder::huffman_encoder_test ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests huffman_rs
[INFO] [stdout] test huffman::huffman_decoder::huffman_decoder_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[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" "10fa41615b7c96c7b462f9709c242c5dbd5f190d6fd48033072491d0e108bf6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10fa41615b7c96c7b462f9709c242c5dbd5f190d6fd48033072491d0e108bf6c", kill_on_drop: false }`
[INFO] [stdout] 10fa41615b7c96c7b462f9709c242c5dbd5f190d6fd48033072491d0e108bf6c