[INFO] fetching crate rchunks 0.1.4...
[INFO] testing rchunks-0.1.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rchunks 0.1.4 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate rchunks 0.1.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rchunks 0.1.4
[INFO] finished tweaking crates.io crate rchunks 0.1.4
[INFO] tweaked toml for crates.io crate rchunks 0.1.4 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c3dc8a415eb15a4f72bd0e34cbfd4789d368df76168f41efe8b7de438119232
[INFO] running `Command { std: "docker" "start" "-a" "4c3dc8a415eb15a4f72bd0e34cbfd4789d368df76168f41efe8b7de438119232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c3dc8a415eb15a4f72bd0e34cbfd4789d368df76168f41efe8b7de438119232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3dc8a415eb15a4f72bd0e34cbfd4789d368df76168f41efe8b7de438119232", kill_on_drop: false }`
[INFO] [stdout] 4c3dc8a415eb15a4f72bd0e34cbfd4789d368df76168f41efe8b7de438119232
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4abe1d39f6229c998a44fbb417c5dd0d29569234f182d850dcf913f21fbb3037
[INFO] running `Command { std: "docker" "start" "-a" "4abe1d39f6229c998a44fbb417c5dd0d29569234f182d850dcf913f21fbb3037", kill_on_drop: false }`
[INFO] [stderr]    Compiling rchunks v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "4abe1d39f6229c998a44fbb417c5dd0d29569234f182d850dcf913f21fbb3037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4abe1d39f6229c998a44fbb417c5dd0d29569234f182d850dcf913f21fbb3037", kill_on_drop: false }`
[INFO] [stdout] 4abe1d39f6229c998a44fbb417c5dd0d29569234f182d850dcf913f21fbb3037
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fbc5369f6db8155c07483936dd97092db1a4ca726ed9cbb5a111f4cc8ca2ab2
[INFO] running `Command { std: "docker" "start" "-a" "7fbc5369f6db8155c07483936dd97092db1a4ca726ed9cbb5a111f4cc8ca2ab2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rchunks v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "7fbc5369f6db8155c07483936dd97092db1a4ca726ed9cbb5a111f4cc8ca2ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fbc5369f6db8155c07483936dd97092db1a4ca726ed9cbb5a111f4cc8ca2ab2", kill_on_drop: false }`
[INFO] [stdout] 7fbc5369f6db8155c07483936dd97092db1a4ca726ed9cbb5a111f4cc8ca2ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 042e542deaa9482b1be8b1f332888e2010662e534ce2cb53dcdb1a750a6a8dd6
[INFO] running `Command { std: "docker" "start" "-a" "042e542deaa9482b1be8b1f332888e2010662e534ce2cb53dcdb1a750a6a8dd6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] running 8 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rchunks-658f489b36c3d3f0)
[INFO] [stdout] test rchunks_double_ended_test ... ok
[INFO] [stdout] test rchunks_mut_size_hint_test ... ok
[INFO] [stdout] test rchunks_mut_test_1 ... ok
[INFO] [stdout] test rchunks_mut_double_ended_test ... ok
[INFO] [stdout] test rchunks_size_hint_test ... ok
[INFO] [stdout] test rchunks_test_1 ... ok
[INFO] [stdout] test rchunks_mut_test_0 - should panic ... ok
[INFO] [stdout] test rchunks_test_0 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rchunks
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 13) ... ignored
[INFO] [stdout] test src/lib.rs - RChunks::rchunks_mut (line 176) ... ok
[INFO] [stdout] test src/lib.rs - RChunks::rchunks (line 153) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "042e542deaa9482b1be8b1f332888e2010662e534ce2cb53dcdb1a750a6a8dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "042e542deaa9482b1be8b1f332888e2010662e534ce2cb53dcdb1a750a6a8dd6", kill_on_drop: false }`
[INFO] [stdout] 042e542deaa9482b1be8b1f332888e2010662e534ce2cb53dcdb1a750a6a8dd6