[INFO] fetching crate kahan 0.1.4...
[INFO] testing kahan-0.1.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate kahan 0.1.4 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate kahan 0.1.4 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 kahan 0.1.4
[INFO] finished tweaking crates.io crate kahan 0.1.4
[INFO] tweaked toml for crates.io crate kahan 0.1.4 written to /workspace/builds/worker-21/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 9300a6ef60092b99b7059578649ad31fd62516a7abe8c6711f38c0a83a7723eb
[INFO] running `Command { std: "docker" "start" "-a" "9300a6ef60092b99b7059578649ad31fd62516a7abe8c6711f38c0a83a7723eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9300a6ef60092b99b7059578649ad31fd62516a7abe8c6711f38c0a83a7723eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9300a6ef60092b99b7059578649ad31fd62516a7abe8c6711f38c0a83a7723eb", kill_on_drop: false }`
[INFO] [stdout] 9300a6ef60092b99b7059578649ad31fd62516a7abe8c6711f38c0a83a7723eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 56fa33feae2ab6997c19d2f65427146f89a9727a7ba5d46fb0362bd9a8c430d7
[INFO] running `Command { std: "docker" "start" "-a" "56fa33feae2ab6997c19d2f65427146f89a9727a7ba5d46fb0362bd9a8c430d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling kahan v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "56fa33feae2ab6997c19d2f65427146f89a9727a7ba5d46fb0362bd9a8c430d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56fa33feae2ab6997c19d2f65427146f89a9727a7ba5d46fb0362bd9a8c430d7", kill_on_drop: false }`
[INFO] [stdout] 56fa33feae2ab6997c19d2f65427146f89a9727a7ba5d46fb0362bd9a8c430d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] e2709442a960673df256c88314136ee231cdf155e33d23d6073bf48b77c5738d
[INFO] running `Command { std: "docker" "start" "-a" "e2709442a960673df256c88314136ee231cdf155e33d23d6073bf48b77c5738d", kill_on_drop: false }`
[INFO] [stderr]    Compiling kahan v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "e2709442a960673df256c88314136ee231cdf155e33d23d6073bf48b77c5738d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2709442a960673df256c88314136ee231cdf155e33d23d6073bf48b77c5738d", kill_on_drop: false }`
[INFO] [stdout] e2709442a960673df256c88314136ee231cdf155e33d23d6073bf48b77c5738d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] f328da22f6e03f7c94db443072e5f1a482fa3e089f2386115cdfa6f844c7d488
[INFO] running `Command { std: "docker" "start" "-a" "f328da22f6e03f7c94db443072e5f1a482fa3e089f2386115cdfa6f844c7d488", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kahan-aba9163ef417d9e3)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::associativity_holds ... ok
[INFO] [stderr]    Doc-tests kahan
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - KahanSum<T> (line 32) ... ok
[INFO] [stdout] test src/lib.rs - KahanSummator::kahan_sum (line 131) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f328da22f6e03f7c94db443072e5f1a482fa3e089f2386115cdfa6f844c7d488", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f328da22f6e03f7c94db443072e5f1a482fa3e089f2386115cdfa6f844c7d488", kill_on_drop: false }`
[INFO] [stdout] f328da22f6e03f7c94db443072e5f1a482fa3e089f2386115cdfa6f844c7d488