[INFO] fetching crate slice_ring_buf 0.2.6...
[INFO] testing slice_ring_buf-0.2.6 against 1.54.0 for beta-1.55-1
[INFO] extracting crate slice_ring_buf 0.2.6 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate slice_ring_buf 0.2.6 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d7e7f8d0a4d4f42f49dd9b534f4202532ae674c71a40fcbe1c1a7289b82cbe5
[INFO] running `Command { std: "docker" "start" "-a" "6d7e7f8d0a4d4f42f49dd9b534f4202532ae674c71a40fcbe1c1a7289b82cbe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d7e7f8d0a4d4f42f49dd9b534f4202532ae674c71a40fcbe1c1a7289b82cbe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d7e7f8d0a4d4f42f49dd9b534f4202532ae674c71a40fcbe1c1a7289b82cbe5", kill_on_drop: false }`
[INFO] [stdout] 6d7e7f8d0a4d4f42f49dd9b534f4202532ae674c71a40fcbe1c1a7289b82cbe5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d67efe63c891d231c9178d141492557a6703449f2209abee94b918e2cfd1999
[INFO] running `Command { std: "docker" "start" "-a" "1d67efe63c891d231c9178d141492557a6703449f2209abee94b918e2cfd1999", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slice_ring_buf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "1d67efe63c891d231c9178d141492557a6703449f2209abee94b918e2cfd1999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d67efe63c891d231c9178d141492557a6703449f2209abee94b918e2cfd1999", kill_on_drop: false }`
[INFO] [stdout] 1d67efe63c891d231c9178d141492557a6703449f2209abee94b918e2cfd1999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee34cc8aaf9e9b611ada16f89512e5161db4d256b3e202458b08307f0ea6ebdc
[INFO] running `Command { std: "docker" "start" "-a" "ee34cc8aaf9e9b611ada16f89512e5161db4d256b3e202458b08307f0ea6ebdc", 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 2.75s
[INFO] running `Command { std: "docker" "inspect" "ee34cc8aaf9e9b611ada16f89512e5161db4d256b3e202458b08307f0ea6ebdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee34cc8aaf9e9b611ada16f89512e5161db4d256b3e202458b08307f0ea6ebdc", kill_on_drop: false }`
[INFO] [stdout] ee34cc8aaf9e9b611ada16f89512e5161db4d256b3e202458b08307f0ea6ebdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7c1a6be073ca2d6879191611ab781b6c6d71af7908a3a2524e0f938ff95b643f
[INFO] running `Command { std: "docker" "start" "-a" "7c1a6be073ca2d6879191611ab781b6c6d71af7908a3a2524e0f938ff95b643f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slice_ring_buf-f9fad5c7a8d9b1bd)
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_mut_slices ... 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_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_clear ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_slices_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_mut_slices_len ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_constrain ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_as_slices_len ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_index ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_index_mut ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_initialize ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_read_into ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_write_latest ... ok
[INFO] [stdout] test referenced::tests::slice_ring_buf_ref_write_latest_2 ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices_latest ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_slices ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_mut_slices_len ... 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_as_slices_len ... ok
[INFO] [stdout] test tests::slice_ring_buf_as_slices_latest ... 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_index_mut ... 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_read_into ... ok
[INFO] [stdout] test tests::slice_ring_buf_set_len ... ok
[INFO] [stdout] test tests::slice_ring_buf_set_len_uninit ... ok
[INFO] [stdout] test tests::slice_ring_buf_write_latest ... ok
[INFO] [stdout] test tests::slice_ring_buf_write_latest_2 ... 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>::set_len_uninit (line 319) ... FAILED
[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-b96460b488490062.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "7c1a6be073ca2d6879191611ab781b6c6d71af7908a3a2524e0f938ff95b643f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c1a6be073ca2d6879191611ab781b6c6d71af7908a3a2524e0f938ff95b643f", kill_on_drop: false }`
[INFO] [stdout] 7c1a6be073ca2d6879191611ab781b6c6d71af7908a3a2524e0f938ff95b643f