[INFO] fetching crate histogram 0.6.9...
[INFO] testing histogram-0.6.9 against 1.55.0 for beta-1.56-1
[INFO] extracting crate histogram 0.6.9 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate histogram 0.6.9 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 histogram 0.6.9
[INFO] finished tweaking crates.io crate histogram 0.6.9
[INFO] tweaked toml for crates.io crate histogram 0.6.9 written to /workspace/builds/worker-17/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 7895bfd4ff44b9b248bbe5a3f564727b2f2e84e08df3b13ef9c60b2b0d104ed5
[INFO] running `Command { std: "docker" "start" "-a" "7895bfd4ff44b9b248bbe5a3f564727b2f2e84e08df3b13ef9c60b2b0d104ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7895bfd4ff44b9b248bbe5a3f564727b2f2e84e08df3b13ef9c60b2b0d104ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7895bfd4ff44b9b248bbe5a3f564727b2f2e84e08df3b13ef9c60b2b0d104ed5", kill_on_drop: false }`
[INFO] [stdout] 7895bfd4ff44b9b248bbe5a3f564727b2f2e84e08df3b13ef9c60b2b0d104ed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] bde60735e9ef2bd0f17ae02775ad87b267d7e14a073e47b7aff42d53d7a46c6a
[INFO] running `Command { std: "docker" "start" "-a" "bde60735e9ef2bd0f17ae02775ad87b267d7e14a073e47b7aff42d53d7a46c6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling histogram v0.6.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "bde60735e9ef2bd0f17ae02775ad87b267d7e14a073e47b7aff42d53d7a46c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde60735e9ef2bd0f17ae02775ad87b267d7e14a073e47b7aff42d53d7a46c6a", kill_on_drop: false }`
[INFO] [stdout] bde60735e9ef2bd0f17ae02775ad87b267d7e14a073e47b7aff42d53d7a46c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 7fa685b6f163a928b3153ec027a95c6583d079ba0ee134c3a7e0b0f01d0aed4e
[INFO] running `Command { std: "docker" "start" "-a" "7fa685b6f163a928b3153ec027a95c6583d079ba0ee134c3a7e0b0f01d0aed4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling histogram v0.6.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "7fa685b6f163a928b3153ec027a95c6583d079ba0ee134c3a7e0b0f01d0aed4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa685b6f163a928b3153ec027a95c6583d079ba0ee134c3a7e0b0f01d0aed4e", kill_on_drop: false }`
[INFO] [stdout] 7fa685b6f163a928b3153ec027a95c6583d079ba0ee134c3a7e0b0f01d0aed4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] cdef832e42ddcc9708d5593a8587b9e516b4fd83213d647b4fda77a7adbe0953
[INFO] running `Command { std: "docker" "start" "-a" "cdef832e42ddcc9708d5593a8587b9e516b4fd83213d647b4fda77a7adbe0953", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/histogram-2052fe8839b89f79)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test tests::test_decrement_by_example_0 ... ok
[INFO] [stdout] test tests::test_get ... ok
[INFO] [stdout] test tests::test_get_index_0 ... ok
[INFO] [stdout] test tests::test_decrement_example_0 ... ok
[INFO] [stdout] test tests::test_increment_1 ... ok
[INFO] [stdout] test tests::test_index_value_0 ... ok
[INFO] [stdout] test tests::test_index_value_1 ... ok
[INFO] [stdout] test tests::test_index_value_2 ... ok
[INFO] [stdout] test tests::test_iterator ... ok
[INFO] [stdout] test tests::test_percentile ... ok
[INFO] [stdout] test tests::test_percentile_bad ... ok
[INFO] [stdout] test tests::test_too_large ... ok
[INFO] [stdout] test tests::test_width_1 ... ok
[INFO] [stdout] test tests::test_width_2 ... ok
[INFO] [stdout] test tests::test_width_3 ... ok
[INFO] [stdout] test tests::test_decrement_4 - should panic ... ok
[INFO] [stdout] test tests::test_decrement_5 - should panic ... ok
[INFO] [stdout] test tests::test_increment_0 ... ok
[INFO] [stdout] test tests::test_decrement_1 ... ok
[INFO] [stderr]    Doc-tests histogram
[INFO] [stdout] test tests::test_decrement_0 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test src/lib.rs - Config::new (line 87) ... ok
[INFO] [stdout] test src/lib.rs - Config::precision (line 98) ... ok
[INFO] [stdout] test src/lib.rs - Config::max_memory (line 111) ... ok
[INFO] [stdout] test src/lib.rs - Bucket::value (line 206) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::new (line 327) ... ok
[INFO] [stdout] test src/lib.rs - Bucket::id (line 232) ... ok
[INFO] [stdout] test src/lib.rs - Bucket::count (line 219) ... ok
[INFO] [stdout] test src/lib.rs - Config::max_value (line 124) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::clear (line 386) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::increment_by (line 421) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::minimum (line 664) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::get (line 521) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::decrement (line 458) ... ok
[INFO] [stdout] test src/lib.rs - (line 28) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::entries (line 822) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::increment (line 406) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::buckets_total (line 837) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::mean (line 694) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::configure (line 338) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::decrement_by (line 476) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::merge (line 793) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::maximum (line 679) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::stdvar (line 722) ... ok
[INFO] [stdout] test src/lib.rs - Bucket::width (line 245) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::percentile (line 590) ... ok
[INFO] [stdout] test src/lib.rs - Histogram::stddev (line 756) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cdef832e42ddcc9708d5593a8587b9e516b4fd83213d647b4fda77a7adbe0953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdef832e42ddcc9708d5593a8587b9e516b4fd83213d647b4fda77a7adbe0953", kill_on_drop: false }`
[INFO] [stdout] cdef832e42ddcc9708d5593a8587b9e516b4fd83213d647b4fda77a7adbe0953