[INFO] fetching crate vtebench 0.3.1...
[INFO] testing vtebench-0.3.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate vtebench 0.3.1 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate vtebench 0.3.1 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 vtebench 0.3.1
[INFO] finished tweaking crates.io crate vtebench 0.3.1
[INFO] tweaked toml for crates.io crate vtebench 0.3.1 written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] crate crates.io crate vtebench 0.3.1 already has a lockfile, it will not be regenerated
[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-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 3da2b7e6a361caf790a9dda82925a795a8d48a37c9bd641f54f7b8b5a80ac89d
[INFO] running `Command { std: "docker" "start" "-a" "3da2b7e6a361caf790a9dda82925a795a8d48a37c9bd641f54f7b8b5a80ac89d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3da2b7e6a361caf790a9dda82925a795a8d48a37c9bd641f54f7b8b5a80ac89d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3da2b7e6a361caf790a9dda82925a795a8d48a37c9bd641f54f7b8b5a80ac89d", kill_on_drop: false }`
[INFO] [stdout] 3da2b7e6a361caf790a9dda82925a795a8d48a37c9bd641f54f7b8b5a80ac89d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 21c992252e40c25696e6f9f1b3f15cd5f98fb91f39c45cb617e408e34a439f9c
[INFO] running `Command { std: "docker" "start" "-a" "21c992252e40c25696e6f9f1b3f15cd5f98fb91f39c45cb617e408e34a439f9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]    Compiling structopt v0.3.17
[INFO] [stderr]    Compiling vtebench v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.81s
[INFO] running `Command { std: "docker" "inspect" "21c992252e40c25696e6f9f1b3f15cd5f98fb91f39c45cb617e408e34a439f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c992252e40c25696e6f9f1b3f15cd5f98fb91f39c45cb617e408e34a439f9c", kill_on_drop: false }`
[INFO] [stdout] 21c992252e40c25696e6f9f1b3f15cd5f98fb91f39c45cb617e408e34a439f9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 4c45cbaf95f0f56ce01a600153efbb91fd3b5c36fb6cd30b251a5549ab45dd89
[INFO] running `Command { std: "docker" "start" "-a" "4c45cbaf95f0f56ce01a600153efbb91fd3b5c36fb6cd30b251a5549ab45dd89", kill_on_drop: false }`
[INFO] [stderr]    Compiling vtebench v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "4c45cbaf95f0f56ce01a600153efbb91fd3b5c36fb6cd30b251a5549ab45dd89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c45cbaf95f0f56ce01a600153efbb91fd3b5c36fb6cd30b251a5549ab45dd89", kill_on_drop: false }`
[INFO] [stdout] 4c45cbaf95f0f56ce01a600153efbb91fd3b5c36fb6cd30b251a5549ab45dd89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] ab012589e371d83394341c5e1091c614df4e316bc23572ddfb1fb39ba445006b
[INFO] running `Command { std: "docker" "start" "-a" "ab012589e371d83394341c5e1091c614df4e316bc23572ddfb1fb39ba445006b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vtebench-ef6255320ef192f8)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test bench::tests::max ... ok
[INFO] [stdout] test bench::tests::median ... ok
[INFO] [stdout] test bench::tests::mean ... ok
[INFO] [stdout] test bench::tests::min ... ok
[INFO] [stdout] test bench::tests::percentile ... ok
[INFO] [stdout] test bench::tests::stddev ... ok
[INFO] [stdout] test bench::tests::variance ... ok
[INFO] [stdout] test format::dat::tests::format_results ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ab012589e371d83394341c5e1091c614df4e316bc23572ddfb1fb39ba445006b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab012589e371d83394341c5e1091c614df4e316bc23572ddfb1fb39ba445006b", kill_on_drop: false }`
[INFO] [stdout] ab012589e371d83394341c5e1091c614df4e316bc23572ddfb1fb39ba445006b