[INFO] fetching crate ru_history 0.1.0...
[INFO] testing ru_history-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ru_history 0.1.0 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate ru_history 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ru_history 0.1.0
[INFO] finished tweaking crates.io crate ru_history 0.1.0
[INFO] tweaked toml for crates.io crate ru_history 0.1.0 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ff97763f228d48f71ab5ea3bf6216b5df94bb9c4ddb1ced6be23fd60802d02b
[INFO] running `Command { std: "docker" "start" "-a" "1ff97763f228d48f71ab5ea3bf6216b5df94bb9c4ddb1ced6be23fd60802d02b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ff97763f228d48f71ab5ea3bf6216b5df94bb9c4ddb1ced6be23fd60802d02b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ff97763f228d48f71ab5ea3bf6216b5df94bb9c4ddb1ced6be23fd60802d02b", kill_on_drop: false }`
[INFO] [stdout] 1ff97763f228d48f71ab5ea3bf6216b5df94bb9c4ddb1ced6be23fd60802d02b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 256f417098f593ebe3db907c71f57a3289fe39ec0f047c93653adeaa65883c85
[INFO] running `Command { std: "docker" "start" "-a" "256f417098f593ebe3db907c71f57a3289fe39ec0f047c93653adeaa65883c85", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling str_tools v0.1.0
[INFO] [stderr]    Compiling bogobble v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling err_tools v0.1.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling ru_history v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `Command { std: "docker" "inspect" "256f417098f593ebe3db907c71f57a3289fe39ec0f047c93653adeaa65883c85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "256f417098f593ebe3db907c71f57a3289fe39ec0f047c93653adeaa65883c85", kill_on_drop: false }`
[INFO] [stdout] 256f417098f593ebe3db907c71f57a3289fe39ec0f047c93653adeaa65883c85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ede7d702f4d2a494f555806ad68f621a62dcbc00f93ced3fddfb08cafb87507f
[INFO] running `Command { std: "docker" "start" "-a" "ede7d702f4d2a494f555806ad68f621a62dcbc00f93ced3fddfb08cafb87507f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ru_history v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "ede7d702f4d2a494f555806ad68f621a62dcbc00f93ced3fddfb08cafb87507f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede7d702f4d2a494f555806ad68f621a62dcbc00f93ced3fddfb08cafb87507f", kill_on_drop: false }`
[INFO] [stdout] ede7d702f4d2a494f555806ad68f621a62dcbc00f93ced3fddfb08cafb87507f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f81db763ab569a76668391b043dc07ab8ef588a9f5ba2efbd6ba108a131b7541
[INFO] running `Command { std: "docker" "start" "-a" "f81db763ab569a76668391b043dc07ab8ef588a9f5ba2efbd6ba108a131b7541", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ru_history-3c5aff37fde0d93f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test sort::test::test_top_n ... ok
[INFO] [stdout] test tests::multi_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ru_history
[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" "f81db763ab569a76668391b043dc07ab8ef588a9f5ba2efbd6ba108a131b7541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f81db763ab569a76668391b043dc07ab8ef588a9f5ba2efbd6ba108a131b7541", kill_on_drop: false }`
[INFO] [stdout] f81db763ab569a76668391b043dc07ab8ef588a9f5ba2efbd6ba108a131b7541