[INFO] fetching crate caret 0.0.0...
[INFO] testing caret-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate caret 0.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate caret 0.0.0 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 caret 0.0.0
[INFO] finished tweaking crates.io crate caret 0.0.0
[INFO] tweaked toml for crates.io crate caret 0.0.0 written to /workspace/builds/worker-2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59767e01a193ff5324072933bf00c2ee028fb45583e1f739d1a10e96e4596a01
[INFO] running `Command { std: "docker" "start" "-a" "59767e01a193ff5324072933bf00c2ee028fb45583e1f739d1a10e96e4596a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59767e01a193ff5324072933bf00c2ee028fb45583e1f739d1a10e96e4596a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59767e01a193ff5324072933bf00c2ee028fb45583e1f739d1a10e96e4596a01", kill_on_drop: false }`
[INFO] [stdout] 59767e01a193ff5324072933bf00c2ee028fb45583e1f739d1a10e96e4596a01
[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=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] 4107e73b51a50aa0129f351f94920068df45ce441a05dba195581bcd6db228c0
[INFO] running `Command { std: "docker" "start" "-a" "4107e73b51a50aa0129f351f94920068df45ce441a05dba195581bcd6db228c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling caret v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "4107e73b51a50aa0129f351f94920068df45ce441a05dba195581bcd6db228c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4107e73b51a50aa0129f351f94920068df45ce441a05dba195581bcd6db228c0", kill_on_drop: false }`
[INFO] [stdout] 4107e73b51a50aa0129f351f94920068df45ce441a05dba195581bcd6db228c0
[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=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] 1afbfe903c22c5eac02d4dab8bc13613bd177c66821cc5a4b2fb577b506d695b
[INFO] running `Command { std: "docker" "start" "-a" "1afbfe903c22c5eac02d4dab8bc13613bd177c66821cc5a4b2fb577b506d695b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling caret v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "1afbfe903c22c5eac02d4dab8bc13613bd177c66821cc5a4b2fb577b506d695b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afbfe903c22c5eac02d4dab8bc13613bd177c66821cc5a4b2fb577b506d695b", kill_on_drop: false }`
[INFO] [stdout] 1afbfe903c22c5eac02d4dab8bc13613bd177c66821cc5a4b2fb577b506d695b
[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=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] a6649a6a52bd641eaa82c5c47d8bc1088bf82d81ad3544144b9a8ba9f5889d98
[INFO] running `Command { std: "docker" "start" "-a" "a6649a6a52bd641eaa82c5c47d8bc1088bf82d81ad3544144b9a8ba9f5889d98", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/caret-1455e6de063cc8b5)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/example_int.rs (/opt/rustwide/target/debug/deps/example_int-920b8c3593c83243)
[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]    Doc-tests caret
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_str_ops ... ok
[INFO] [stdout] test test_int_ops ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - caret_int (line 97) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a6649a6a52bd641eaa82c5c47d8bc1088bf82d81ad3544144b9a8ba9f5889d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6649a6a52bd641eaa82c5c47d8bc1088bf82d81ad3544144b9a8ba9f5889d98", kill_on_drop: false }`
[INFO] [stdout] a6649a6a52bd641eaa82c5c47d8bc1088bf82d81ad3544144b9a8ba9f5889d98