[INFO] fetching crate histo 0.1.0...
[INFO] testing histo-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate histo 0.1.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate histo 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate histo 0.1.0
[INFO] finished tweaking crates.io crate histo 0.1.0
[INFO] tweaked toml for crates.io crate histo 0.1.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 406f53901121f51066114c385419c1d6d599ace44d288522beb1570521954245
[INFO] running `Command { std: "docker" "start" "-a" "406f53901121f51066114c385419c1d6d599ace44d288522beb1570521954245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "406f53901121f51066114c385419c1d6d599ace44d288522beb1570521954245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406f53901121f51066114c385419c1d6d599ace44d288522beb1570521954245", kill_on_drop: false }`
[INFO] [stdout] 406f53901121f51066114c385419c1d6d599ace44d288522beb1570521954245
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad9452297d967f7e66c40f49ba452c251e3fab59a09f2d9a509b6e7c4f845c7b
[INFO] running `Command { std: "docker" "start" "-a" "ad9452297d967f7e66c40f49ba452c251e3fab59a09f2d9a509b6e7c4f845c7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling streaming-stats v0.1.29
[INFO] [stderr]    Compiling histo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.32s
[INFO] running `Command { std: "docker" "inspect" "ad9452297d967f7e66c40f49ba452c251e3fab59a09f2d9a509b6e7c4f845c7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad9452297d967f7e66c40f49ba452c251e3fab59a09f2d9a509b6e7c4f845c7b", kill_on_drop: false }`
[INFO] [stdout] ad9452297d967f7e66c40f49ba452c251e3fab59a09f2d9a509b6e7c4f845c7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a209acb1a6fbd881d21c6004f1a0cfdfeb29848c2fbd54917290364449924b2a
[INFO] running `Command { std: "docker" "start" "-a" "a209acb1a6fbd881d21c6004f1a0cfdfeb29848c2fbd54917290364449924b2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling histo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "a209acb1a6fbd881d21c6004f1a0cfdfeb29848c2fbd54917290364449924b2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a209acb1a6fbd881d21c6004f1a0cfdfeb29848c2fbd54917290364449924b2a", kill_on_drop: false }`
[INFO] [stdout] a209acb1a6fbd881d21c6004f1a0cfdfeb29848c2fbd54917290364449924b2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a2a3426f279d34626c8b2c20ab7565e32e130bc6452a909efc13a6f128458d99
[INFO] running `Command { std: "docker" "start" "-a" "a2a3426f279d34626c8b2c20ab7565e32e130bc6452a909efc13a6f128458d99", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/histo-fef6d8bb16d99c58)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::bucket_count ... ok
[INFO] [stdout] test tests::bucket_count_one ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/histo-ce2db5d5644afbd9)
[INFO] [stdout] test tests::num_buckets ... ok
[INFO] [stdout] test tests::overflow_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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] [stderr]    Doc-tests histo
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a2a3426f279d34626c8b2c20ab7565e32e130bc6452a909efc13a6f128458d99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2a3426f279d34626c8b2c20ab7565e32e130bc6452a909efc13a6f128458d99", kill_on_drop: false }`
[INFO] [stdout] a2a3426f279d34626c8b2c20ab7565e32e130bc6452a909efc13a6f128458d99