[INFO] fetching crate river-ring-buffer 1.0.0...
[INFO] testing river-ring-buffer-1.0.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate river-ring-buffer 1.0.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate river-ring-buffer 1.0.0
[INFO] finished tweaking crates.io crate river-ring-buffer 1.0.0
[INFO] tweaked toml for crates.io crate river-ring-buffer 1.0.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate river-ring-buffer 1.0.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a804342f4d1011f4726d807c8f43f822c98461f192ac9c9a641b4898cdcbe615
[INFO] running `Command { std: "docker" "start" "-a" "a804342f4d1011f4726d807c8f43f822c98461f192ac9c9a641b4898cdcbe615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a804342f4d1011f4726d807c8f43f822c98461f192ac9c9a641b4898cdcbe615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a804342f4d1011f4726d807c8f43f822c98461f192ac9c9a641b4898cdcbe615", kill_on_drop: false }`
[INFO] [stdout] a804342f4d1011f4726d807c8f43f822c98461f192ac9c9a641b4898cdcbe615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85f99cba8cb4ae384778655a992eb63b3588372075e2a8b7f446b03645073773
[INFO] running `Command { std: "docker" "start" "-a" "85f99cba8cb4ae384778655a992eb63b3588372075e2a8b7f446b03645073773", kill_on_drop: false }`
[INFO] [stderr]    Compiling river-ring-buffer v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "85f99cba8cb4ae384778655a992eb63b3588372075e2a8b7f446b03645073773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f99cba8cb4ae384778655a992eb63b3588372075e2a8b7f446b03645073773", kill_on_drop: false }`
[INFO] [stdout] 85f99cba8cb4ae384778655a992eb63b3588372075e2a8b7f446b03645073773
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64742cbb7d6228471e25918d32f4c82efbb764677953c60411f5d3b69d2878d6
[INFO] running `Command { std: "docker" "start" "-a" "64742cbb7d6228471e25918d32f4c82efbb764677953c60411f5d3b69d2878d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling river-ring-buffer v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "64742cbb7d6228471e25918d32f4c82efbb764677953c60411f5d3b69d2878d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64742cbb7d6228471e25918d32f4c82efbb764677953c60411f5d3b69d2878d6", kill_on_drop: false }`
[INFO] [stdout] 64742cbb7d6228471e25918d32f4c82efbb764677953c60411f5d3b69d2878d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f75a2cfd791a5b462fd419c91d9917eb3f2c430f9bc1aaa194040ca0cf4d519
[INFO] running `Command { std: "docker" "start" "-a" "8f75a2cfd791a5b462fd419c91d9917eb3f2c430f9bc1aaa194040ca0cf4d519", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/river_ring_buffer-feb00662af63e033)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::it_overwrites_oldest_value_when_buffer_is_full ... ok
[INFO] [stdout] test tests::it_returns_none_when_ring_buffer_empty ... ok
[INFO] [stdout] test tests::it_returns_values_in_fifo_order ... ok
[INFO] [stdout] test tests::it_returns_error_when_buffer_is_full ... 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] [stderr]    Doc-tests river_ring_buffer
[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] running `Command { std: "docker" "inspect" "8f75a2cfd791a5b462fd419c91d9917eb3f2c430f9bc1aaa194040ca0cf4d519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f75a2cfd791a5b462fd419c91d9917eb3f2c430f9bc1aaa194040ca0cf4d519", kill_on_drop: false }`
[INFO] [stdout] 8f75a2cfd791a5b462fd419c91d9917eb3f2c430f9bc1aaa194040ca0cf4d519