[INFO] fetching crate c2_histograms 0.2.4...
[INFO] testing c2_histograms-0.2.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate c2_histograms 0.2.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate c2_histograms 0.2.4 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 c2_histograms 0.2.4
[INFO] finished tweaking crates.io crate c2_histograms 0.2.4
[INFO] tweaked toml for crates.io crate c2_histograms 0.2.4 written to /workspace/builds/worker-3/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 9dd40d391624f2872ee91f8e9764b90900d4468f896960eff2faff8f8d7f70eb
[INFO] running `Command { std: "docker" "start" "-a" "9dd40d391624f2872ee91f8e9764b90900d4468f896960eff2faff8f8d7f70eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dd40d391624f2872ee91f8e9764b90900d4468f896960eff2faff8f8d7f70eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dd40d391624f2872ee91f8e9764b90900d4468f896960eff2faff8f8d7f70eb", kill_on_drop: false }`
[INFO] [stdout] 9dd40d391624f2872ee91f8e9764b90900d4468f896960eff2faff8f8d7f70eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 5622b82a0cd08b683f5bd06d2668dcbed09b618aae608b5e0eb56ab453634e67
[INFO] running `Command { std: "docker" "start" "-a" "5622b82a0cd08b683f5bd06d2668dcbed09b618aae608b5e0eb56ab453634e67", kill_on_drop: false }`
[INFO] [stderr]    Compiling c2_histograms v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "5622b82a0cd08b683f5bd06d2668dcbed09b618aae608b5e0eb56ab453634e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5622b82a0cd08b683f5bd06d2668dcbed09b618aae608b5e0eb56ab453634e67", kill_on_drop: false }`
[INFO] [stdout] 5622b82a0cd08b683f5bd06d2668dcbed09b618aae608b5e0eb56ab453634e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 17298d7124388b5409c48b37e259126d9ce3c9fc3260ff6e4d5b85ef1e0f218a
[INFO] running `Command { std: "docker" "start" "-a" "17298d7124388b5409c48b37e259126d9ce3c9fc3260ff6e4d5b85ef1e0f218a", kill_on_drop: false }`
[INFO] [stderr]    Compiling c2_histograms v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "17298d7124388b5409c48b37e259126d9ce3c9fc3260ff6e4d5b85ef1e0f218a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17298d7124388b5409c48b37e259126d9ce3c9fc3260ff6e4d5b85ef1e0f218a", kill_on_drop: false }`
[INFO] [stdout] 17298d7124388b5409c48b37e259126d9ce3c9fc3260ff6e4d5b85ef1e0f218a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 701b676ec907337e8352f15fdcae44133004ff32ac4c6336671e4dc6cbff35d1
[INFO] running `Command { std: "docker" "start" "-a" "701b676ec907337e8352f15fdcae44133004ff32ac4c6336671e4dc6cbff35d1", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 15 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/c2_histograms-4c75a14a46d32f05)
[INFO] [stdout] test c2::compact_testing::index_buckets ... ok
[INFO] [stdout] test c2::compact_testing::ranges ... ok
[INFO] [stdout] test c2::compact_testing::init_params ... ok
[INFO] [stdout] test c2::compress_testing::compression ... ok
[INFO] [stdout] test c2::compress_testing::decompression ... ok
[INFO] [stdout] test standard::standard_testing::compaction2 ... ok
[INFO] [stderr]    Doc-tests c2_histograms
[INFO] [stdout] test c2::compress_testing::decomp_comp ... ok
[INFO] [stdout] test c2::compress_testing::init_params ... ok
[INFO] [stdout] test standard::standard_testing::init ... ok
[INFO] [stdout] test standard::standard_testing::compression1 ... ok
[INFO] [stdout] test c2::compact_testing::pos_leases ... ok
[INFO] [stdout] test standard::standard_testing::compaction1 ... ok
[INFO] [stdout] test c2::compact_testing::sub_ranges ... ok
[INFO] [stdout] test standard::standard_testing::compression2 ... ok
[INFO] [stdout] test standard::standard_testing::c2_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/c2.rs - c2::C2Params (line 621) ... ok
[INFO] [stdout] test src/c2.rs - c2::CompactParams (line 123) ... ok
[INFO] [stdout] test src/standard.rs - standard::NullParams (line 153) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_compact (line 230) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram (line 169) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_compressed (line 289) ... ok
[INFO] [stdout] test src/c2.rs - c2::CompressedParams (line 449) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_c2 (line 323) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "701b676ec907337e8352f15fdcae44133004ff32ac4c6336671e4dc6cbff35d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701b676ec907337e8352f15fdcae44133004ff32ac4c6336671e4dc6cbff35d1", kill_on_drop: false }`
[INFO] [stdout] 701b676ec907337e8352f15fdcae44133004ff32ac4c6336671e4dc6cbff35d1