[INFO] fetching crate telegrust-histo 0.1.2...
[INFO] testing telegrust-histo-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate telegrust-histo 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate telegrust-histo 0.1.2 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 telegrust-histo 0.1.2
[INFO] finished tweaking crates.io crate telegrust-histo 0.1.2
[INFO] tweaked toml for crates.io crate telegrust-histo 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate telegrust-histo 0.1.2 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 8fc88bdf4f90014df15fded2d10d68c0f415e41e50556f03477c3707b115da39
[INFO] running `Command { std: "docker" "start" "-a" "8fc88bdf4f90014df15fded2d10d68c0f415e41e50556f03477c3707b115da39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fc88bdf4f90014df15fded2d10d68c0f415e41e50556f03477c3707b115da39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc88bdf4f90014df15fded2d10d68c0f415e41e50556f03477c3707b115da39", kill_on_drop: false }`
[INFO] [stdout] 8fc88bdf4f90014df15fded2d10d68c0f415e41e50556f03477c3707b115da39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] a4c652842844ee3b34730174411e9ea9c327dd4ed9ab1f9b78ae4022d0b0e0a1
[INFO] running `Command { std: "docker" "start" "-a" "a4c652842844ee3b34730174411e9ea9c327dd4ed9ab1f9b78ae4022d0b0e0a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling svg v0.7.2
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling exitcode v1.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling plotlib v0.5.1
[INFO] [stderr]    Compiling telegrust-histo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.54s
[INFO] running `Command { std: "docker" "inspect" "a4c652842844ee3b34730174411e9ea9c327dd4ed9ab1f9b78ae4022d0b0e0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4c652842844ee3b34730174411e9ea9c327dd4ed9ab1f9b78ae4022d0b0e0a1", kill_on_drop: false }`
[INFO] [stdout] a4c652842844ee3b34730174411e9ea9c327dd4ed9ab1f9b78ae4022d0b0e0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 742f195fc75150e9f14d79702808fe1c4956191f185b35f1196efbb86ee44b78
[INFO] running `Command { std: "docker" "start" "-a" "742f195fc75150e9f14d79702808fe1c4956191f185b35f1196efbb86ee44b78", kill_on_drop: false }`
[INFO] [stderr]    Compiling telegrust-histo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "742f195fc75150e9f14d79702808fe1c4956191f185b35f1196efbb86ee44b78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742f195fc75150e9f14d79702808fe1c4956191f185b35f1196efbb86ee44b78", kill_on_drop: false }`
[INFO] [stdout] 742f195fc75150e9f14d79702808fe1c4956191f185b35f1196efbb86ee44b78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] a08bbdcaad64c5a964359ce540f60e2d7ec9c78a048889852ca979ef847bd2ea
[INFO] running `Command { std: "docker" "start" "-a" "a08bbdcaad64c5a964359ce540f60e2d7ec9c78a048889852ca979ef847bd2ea", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/telegrust_histo-155546b71d258117)
[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" "a08bbdcaad64c5a964359ce540f60e2d7ec9c78a048889852ca979ef847bd2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a08bbdcaad64c5a964359ce540f60e2d7ec9c78a048889852ca979ef847bd2ea", kill_on_drop: false }`
[INFO] [stdout] a08bbdcaad64c5a964359ce540f60e2d7ec9c78a048889852ca979ef847bd2ea