[INFO] fetching crate rbuf 0.1.3...
[INFO] testing rbuf-0.1.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rbuf 0.1.3 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate rbuf 0.1.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbuf 0.1.3
[INFO] finished tweaking crates.io crate rbuf 0.1.3
[INFO] tweaked toml for crates.io crate rbuf 0.1.3 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5340e786beb312e9147ad7a49823f13e95fc0519ee094ad71271e8eb286afe1b
[INFO] running `Command { std: "docker" "start" "-a" "5340e786beb312e9147ad7a49823f13e95fc0519ee094ad71271e8eb286afe1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5340e786beb312e9147ad7a49823f13e95fc0519ee094ad71271e8eb286afe1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5340e786beb312e9147ad7a49823f13e95fc0519ee094ad71271e8eb286afe1b", kill_on_drop: false }`
[INFO] [stdout] 5340e786beb312e9147ad7a49823f13e95fc0519ee094ad71271e8eb286afe1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f25732251a315c6f89e527afbf501c8f7bbe4f7465764a958093453c6cd5fe25
[INFO] running `Command { std: "docker" "start" "-a" "f25732251a315c6f89e527afbf501c8f7bbe4f7465764a958093453c6cd5fe25", kill_on_drop: false }`
[INFO] [stderr]    Compiling rbuf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "f25732251a315c6f89e527afbf501c8f7bbe4f7465764a958093453c6cd5fe25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25732251a315c6f89e527afbf501c8f7bbe4f7465764a958093453c6cd5fe25", kill_on_drop: false }`
[INFO] [stdout] f25732251a315c6f89e527afbf501c8f7bbe4f7465764a958093453c6cd5fe25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 610b9a3b5c48bfc0955b69a288539a1e1f44400502a328a5d55908970cd280a5
[INFO] running `Command { std: "docker" "start" "-a" "610b9a3b5c48bfc0955b69a288539a1e1f44400502a328a5d55908970cd280a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rbuf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "610b9a3b5c48bfc0955b69a288539a1e1f44400502a328a5d55908970cd280a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "610b9a3b5c48bfc0955b69a288539a1e1f44400502a328a5d55908970cd280a5", kill_on_drop: false }`
[INFO] [stdout] 610b9a3b5c48bfc0955b69a288539a1e1f44400502a328a5d55908970cd280a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2458b9954cd543d408c4aa0fbbf111cc689f6f4ff7ce5f484438b02aa52b71df
[INFO] running `Command { std: "docker" "start" "-a" "2458b9954cd543d408c4aa0fbbf111cc689f6f4ff7ce5f484438b02aa52b71df", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rbuf-a69beca4ae394d57)
[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] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-e30c1388b5e3acd7)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test boxed_slice ... ok
[INFO] [stdout] test buf_len ... ok
[INFO] [stdout] test buf_index ... ok
[INFO] [stdout] test front_back_mut ... ok
[INFO] [stdout] test double_ended_iter ... ok
[INFO] [stdout] test front_back ... ok
[INFO] [stdout] test iter_next ... ok
[INFO] [stdout] test iter_size_hint ... ok
[INFO] [stdout] test mutating_iter ... ok
[INFO] [stdout] test ring_buf_macro ... ok
[INFO] [stdout] test no_mutable_iterator_with_zst - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rbuf
[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" "2458b9954cd543d408c4aa0fbbf111cc689f6f4ff7ce5f484438b02aa52b71df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2458b9954cd543d408c4aa0fbbf111cc689f6f4ff7ce5f484438b02aa52b71df", kill_on_drop: false }`
[INFO] [stdout] 2458b9954cd543d408c4aa0fbbf111cc689f6f4ff7ce5f484438b02aa52b71df