[INFO] fetching crate ref_slice 1.2.1...
[INFO] testing ref_slice-1.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate ref_slice 1.2.1 into /workspace/builds/worker-110/source
[INFO] validating manifest of crates.io crate ref_slice 1.2.1 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 ref_slice 1.2.1
[INFO] finished tweaking crates.io crate ref_slice 1.2.1
[INFO] tweaked toml for crates.io crate ref_slice 1.2.1 written to /workspace/builds/worker-110/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-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 30ac06759eedab6962a7ebe5de632b8efdc9eaa0c420b370b766b21a1b0c4225
[INFO] running `Command { std: "docker" "start" "-a" "30ac06759eedab6962a7ebe5de632b8efdc9eaa0c420b370b766b21a1b0c4225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30ac06759eedab6962a7ebe5de632b8efdc9eaa0c420b370b766b21a1b0c4225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30ac06759eedab6962a7ebe5de632b8efdc9eaa0c420b370b766b21a1b0c4225", kill_on_drop: false }`
[INFO] [stdout] 30ac06759eedab6962a7ebe5de632b8efdc9eaa0c420b370b766b21a1b0c4225
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 748bc853bb4178242cdcb2de543ddac8b923ea74370dbd167f252d9b3006da4e
[INFO] running `Command { std: "docker" "start" "-a" "748bc853bb4178242cdcb2de543ddac8b923ea74370dbd167f252d9b3006da4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref_slice v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "748bc853bb4178242cdcb2de543ddac8b923ea74370dbd167f252d9b3006da4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "748bc853bb4178242cdcb2de543ddac8b923ea74370dbd167f252d9b3006da4e", kill_on_drop: false }`
[INFO] [stdout] 748bc853bb4178242cdcb2de543ddac8b923ea74370dbd167f252d9b3006da4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 8586787f6474eb1282701cda962d31403085e235fea620d6e66ddeb4d26d4ee9
[INFO] running `Command { std: "docker" "start" "-a" "8586787f6474eb1282701cda962d31403085e235fea620d6e66ddeb4d26d4ee9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref_slice v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "8586787f6474eb1282701cda962d31403085e235fea620d6e66ddeb4d26d4ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8586787f6474eb1282701cda962d31403085e235fea620d6e66ddeb4d26d4ee9", kill_on_drop: false }`
[INFO] [stdout] 8586787f6474eb1282701cda962d31403085e235fea620d6e66ddeb4d26d4ee9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] c8d93e3ff3f3076050cd0a82f9fc22509f86702bb2c3af8d7eae3a2cfd9f4ef8
[INFO] running `Command { std: "docker" "start" "-a" "c8d93e3ff3f3076050cd0a82f9fc22509f86702bb2c3af8d7eae3a2cfd9f4ef8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ref_slice-4e5dda49379e67c0)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::check ... ok
[INFO] [stdout] test tests::check_mut ... ok
[INFO] [stdout] test tests::check_opt ... ok
[INFO] [stdout] test tests::check_opt_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ref_slice
[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" "c8d93e3ff3f3076050cd0a82f9fc22509f86702bb2c3af8d7eae3a2cfd9f4ef8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8d93e3ff3f3076050cd0a82f9fc22509f86702bb2c3af8d7eae3a2cfd9f4ef8", kill_on_drop: false }`
[INFO] [stdout] c8d93e3ff3f3076050cd0a82f9fc22509f86702bb2c3af8d7eae3a2cfd9f4ef8