[INFO] fetching crate e-write-buffer 0.6.1...
[INFO] testing e-write-buffer-0.6.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate e-write-buffer 0.6.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate e-write-buffer 0.6.1
[INFO] finished tweaking crates.io crate e-write-buffer 0.6.1
[INFO] tweaked toml for crates.io crate e-write-buffer 0.6.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate e-write-buffer 0.6.1 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] crate crates.io crate e-write-buffer 0.6.1 already has a lockfile, it will not be regenerated
[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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1dc29e281f544e996826d226b21b32ccbc43387fa40c3d0f135c6ff6fef46994
[INFO] running `Command { std: "docker" "start" "-a" "1dc29e281f544e996826d226b21b32ccbc43387fa40c3d0f135c6ff6fef46994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dc29e281f544e996826d226b21b32ccbc43387fa40c3d0f135c6ff6fef46994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dc29e281f544e996826d226b21b32ccbc43387fa40c3d0f135c6ff6fef46994", kill_on_drop: false }`
[INFO] [stdout] 1dc29e281f544e996826d226b21b32ccbc43387fa40c3d0f135c6ff6fef46994
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8a03b43a971af7ba6ccf7c3b16d1e46d0908892b185d72cc0f0db0f4030b1f9b
[INFO] running `Command { std: "docker" "start" "-a" "8a03b43a971af7ba6ccf7c3b16d1e46d0908892b185d72cc0f0db0f4030b1f9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling e-write-buffer v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "8a03b43a971af7ba6ccf7c3b16d1e46d0908892b185d72cc0f0db0f4030b1f9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a03b43a971af7ba6ccf7c3b16d1e46d0908892b185d72cc0f0db0f4030b1f9b", kill_on_drop: false }`
[INFO] [stdout] 8a03b43a971af7ba6ccf7c3b16d1e46d0908892b185d72cc0f0db0f4030b1f9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4888547c992937451271b500e5d4a6524a6d68441de023d12985445f5bbafada
[INFO] running `Command { std: "docker" "start" "-a" "4888547c992937451271b500e5d4a6524a6d68441de023d12985445f5bbafada", kill_on_drop: false }`
[INFO] [stderr]    Compiling e-write-buffer v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "4888547c992937451271b500e5d4a6524a6d68441de023d12985445f5bbafada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4888547c992937451271b500e5d4a6524a6d68441de023d12985445f5bbafada", kill_on_drop: false }`
[INFO] [stdout] 4888547c992937451271b500e5d4a6524a6d68441de023d12985445f5bbafada
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b9eddaa2aa24548301c109cb7a85c6f4bbbb2d736c76f4495bcae4168b4e2ce4
[INFO] running `Command { std: "docker" "start" "-a" "b9eddaa2aa24548301c109cb7a85c6f4bbbb2d736c76f4495bcae4168b4e2ce4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/e_write_buffer-448cc4a96114917b)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::test_as_str_mut ... ok
[INFO] [stdout] test test::test_display ... ok
[INFO] [stdout] test test::test_is_empty_is_full_and_overflow ... ok
[INFO] [stderr]    Doc-tests e_write_buffer
[INFO] [stdout] test test::test_write_wrapper ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[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] running `Command { std: "docker" "inspect" "b9eddaa2aa24548301c109cb7a85c6f4bbbb2d736c76f4495bcae4168b4e2ce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9eddaa2aa24548301c109cb7a85c6f4bbbb2d736c76f4495bcae4168b4e2ce4", kill_on_drop: false }`
[INFO] [stdout] b9eddaa2aa24548301c109cb7a85c6f4bbbb2d736c76f4495bcae4168b4e2ce4