[INFO] fetching crate ixlist 0.1.0...
[INFO] testing ixlist-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ixlist 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ixlist 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 ixlist 0.1.0
[INFO] finished tweaking crates.io crate ixlist 0.1.0
[INFO] tweaked toml for crates.io crate ixlist 0.1.0 written to /workspace/builds/worker-2/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]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.6.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0c76e3f667a63dc9ff1495081f081dae179238729e0fe93d9d860c79cbcadde8
[INFO] running `Command { std: "docker" "start" "-a" "0c76e3f667a63dc9ff1495081f081dae179238729e0fe93d9d860c79cbcadde8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c76e3f667a63dc9ff1495081f081dae179238729e0fe93d9d860c79cbcadde8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c76e3f667a63dc9ff1495081f081dae179238729e0fe93d9d860c79cbcadde8", kill_on_drop: false }`
[INFO] [stdout] 0c76e3f667a63dc9ff1495081f081dae179238729e0fe93d9d860c79cbcadde8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e9f5d1b0c98ec36e4c47206d7eb901fedd79bbea983fce009174177caae61f27
[INFO] running `Command { std: "docker" "start" "-a" "e9f5d1b0c98ec36e4c47206d7eb901fedd79bbea983fce009174177caae61f27", kill_on_drop: false }`
[INFO] [stderr]    Compiling ixlist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "e9f5d1b0c98ec36e4c47206d7eb901fedd79bbea983fce009174177caae61f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f5d1b0c98ec36e4c47206d7eb901fedd79bbea983fce009174177caae61f27", kill_on_drop: false }`
[INFO] [stdout] e9f5d1b0c98ec36e4c47206d7eb901fedd79bbea983fce009174177caae61f27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 571963f16d2a9925c303fb2d94804e01669470e4c981543d5ed2e09048a7aa9d
[INFO] running `Command { std: "docker" "start" "-a" "571963f16d2a9925c303fb2d94804e01669470e4c981543d5ed2e09048a7aa9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling ixlist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "571963f16d2a9925c303fb2d94804e01669470e4c981543d5ed2e09048a7aa9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571963f16d2a9925c303fb2d94804e01669470e4c981543d5ed2e09048a7aa9d", kill_on_drop: false }`
[INFO] [stdout] 571963f16d2a9925c303fb2d94804e01669470e4c981543d5ed2e09048a7aa9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 2f759639cc33321be2cef905de7958798a33ee3e18609fad0f4166d6c54950c8
[INFO] running `Command { std: "docker" "start" "-a" "2f759639cc33321be2cef905de7958798a33ee3e18609fad0f4166d6c54950c8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ixlist-e2451a58b71cbc2a)
[INFO] [stderr]      Running tests/list.rs (/opt/rustwide/target/debug/deps/list-68b5e9566614b139)
[INFO] [stderr]    Doc-tests ixlist
[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] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test cursor ... ok
[INFO] [stdout] test extend ... ok
[INFO] [stdout] test iter ... ok
[INFO] [stdout] test basic ... ok
[INFO] [stdout] test push_pop ... ok
[INFO] [stdout] test from_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - List (line 49) ... ignored
[INFO] [stdout] test src/lib.rs - List (line 59) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2f759639cc33321be2cef905de7958798a33ee3e18609fad0f4166d6c54950c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f759639cc33321be2cef905de7958798a33ee3e18609fad0f4166d6c54950c8", kill_on_drop: false }`
[INFO] [stdout] 2f759639cc33321be2cef905de7958798a33ee3e18609fad0f4166d6c54950c8