[INFO] fetching crate slice_ring_buf 0.2.6...
[INFO] testing slice_ring_buf-0.2.6 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate slice_ring_buf 0.2.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate slice_ring_buf 0.2.6 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slice_ring_buf 0.2.6
[INFO] finished tweaking crates.io crate slice_ring_buf 0.2.6
[INFO] tweaked toml for crates.io crate slice_ring_buf 0.2.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 527a3fa71e44120e9a516b4c4daf9363e52fe0a1abca59d9e6bf9f0c5fb0d872
[INFO] running `Command { std: "docker" "start" "-a" "527a3fa71e44120e9a516b4c4daf9363e52fe0a1abca59d9e6bf9f0c5fb0d872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "527a3fa71e44120e9a516b4c4daf9363e52fe0a1abca59d9e6bf9f0c5fb0d872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "527a3fa71e44120e9a516b4c4daf9363e52fe0a1abca59d9e6bf9f0c5fb0d872", kill_on_drop: false }`
[INFO] [stdout] 527a3fa71e44120e9a516b4c4daf9363e52fe0a1abca59d9e6bf9f0c5fb0d872
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a7a6a7a8b8ed53b94b8b046a51a9fa4b253d2750d0fb38bff78641f3b521150
[INFO] running `Command { std: "docker" "start" "-a" "6a7a6a7a8b8ed53b94b8b046a51a9fa4b253d2750d0fb38bff78641f3b521150", kill_on_drop: false }`
[INFO] [stderr]    Compiling slice_ring_buf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "6a7a6a7a8b8ed53b94b8b046a51a9fa4b253d2750d0fb38bff78641f3b521150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a7a6a7a8b8ed53b94b8b046a51a9fa4b253d2750d0fb38bff78641f3b521150", kill_on_drop: false }`
[INFO] [stdout] 6a7a6a7a8b8ed53b94b8b046a51a9fa4b253d2750d0fb38bff78641f3b521150
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c68bc43841d8e477543b84c36d13921a5ff9428118b54cc254f89f846c57a8b7
[INFO] running `Command { std: "docker" "start" "-a" "c68bc43841d8e477543b84c36d13921a5ff9428118b54cc254f89f846c57a8b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling slice_ring_buf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "c68bc43841d8e477543b84c36d13921a5ff9428118b54cc254f89f846c57a8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c68bc43841d8e477543b84c36d13921a5ff9428118b54cc254f89f846c57a8b7", kill_on_drop: false }`
[INFO] [stdout] c68bc43841d8e477543b84c36d13921a5ff9428118b54cc254f89f846c57a8b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4f69a19059b2e6adc3bee940dc0b231bb1cff0ceab813963274655e9e295a3ed
[INFO] running `Command { std: "docker" "start" "-a" "4f69a19059b2e6adc3bee940dc0b231bb1cff0ceab813963274655e9e295a3ed", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 32 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slice_ring_buf-8d7867b70ae7327f)
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_clear ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_constrain ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_mut_slices_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_write_latest ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_slices ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_slices_latest ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_slices_len ... ok
[INFO] [stdout] test tests::slice_ring_buf_constrain ... ok
[INFO] [stdout] test tests::slice_ring_buf_index ... ok
[INFO] [stdout] test tests::slice_ring_buf_initialize ... ok
[INFO] [stdout] test tests::slice_ring_buf_initialize_uninit ... ok
[INFO] [stdout] test tests::slice_ring_buf_set_len_uninit ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_write_latest_2 ... ok
[INFO] [stdout] test tests::slice_ring_buf_write_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_read_into ... ok
[INFO] [stdout] test tests::slice_ring_buf_write_latest_2 ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_slices_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_index ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices_len ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_initialize ... ok
[INFO] [stdout] test tests::slice_ring_buf_clear ... ok
[INFO] [stdout] test tests::slice_ring_buf_clear_set_len ... ok
[INFO] [stdout] test tests::slice_ring_buf_index_mut ... ok
[INFO] [stdout] test tests::slice_ring_buf_read_into ... ok
[INFO] [stdout] test tests::slice_ring_buf_set_len ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_index_mut ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_slices ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_mut_slices_len ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_mut_slices ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_slices_len ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slice_ring_buf
[INFO] [stdout] 
[INFO] [stdout] running 49 tests
[INFO] [stdout] test src/lib.rs - SliceRB<T>::from_len_with_capacity_uninit (line 206) ... ok
[INFO] [stdout] test src/lib.rs - SliceRB<T>::set_len_uninit (line 319) ... ok
[INFO] [stdout] test src/lib.rs - SliceRB<T>::as_slices_len (line 526) ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name slice_ring_buf --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern slice_ring_buf=/opt/rustwide/target/debug/deps/libslice_ring_buf-b32d8c29440dbb05.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "4f69a19059b2e6adc3bee940dc0b231bb1cff0ceab813963274655e9e295a3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f69a19059b2e6adc3bee940dc0b231bb1cff0ceab813963274655e9e295a3ed", kill_on_drop: false }`
[INFO] [stdout] 4f69a19059b2e6adc3bee940dc0b231bb1cff0ceab813963274655e9e295a3ed