[INFO] fetching crate try_opt 0.2.0...
[INFO] testing try_opt-0.2.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate try_opt 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate try_opt 0.2.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate try_opt 0.2.0
[INFO] finished tweaking crates.io crate try_opt 0.2.0
[INFO] tweaked toml for crates.io crate try_opt 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 65c037c31d9770898dd1b98a427ebb05d85bfa31554f7fdee03c84b84b049f85
[INFO] running `Command { std: "docker" "start" "-a" "65c037c31d9770898dd1b98a427ebb05d85bfa31554f7fdee03c84b84b049f85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65c037c31d9770898dd1b98a427ebb05d85bfa31554f7fdee03c84b84b049f85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65c037c31d9770898dd1b98a427ebb05d85bfa31554f7fdee03c84b84b049f85", kill_on_drop: false }`
[INFO] [stdout] 65c037c31d9770898dd1b98a427ebb05d85bfa31554f7fdee03c84b84b049f85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f47d89972a38e2dd9f654972c090212d04a28f2e93376192c30f79922993b5f2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f47d89972a38e2dd9f654972c090212d04a28f2e93376192c30f79922993b5f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling try_opt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "f47d89972a38e2dd9f654972c090212d04a28f2e93376192c30f79922993b5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f47d89972a38e2dd9f654972c090212d04a28f2e93376192c30f79922993b5f2", kill_on_drop: false }`
[INFO] [stdout] f47d89972a38e2dd9f654972c090212d04a28f2e93376192c30f79922993b5f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 357b03e72c6fd64b7a64f1374a8c76960aa9c2251c899a4f7230dc71a16d5d18
[INFO] running `Command { std: "docker" "start" "-a" "357b03e72c6fd64b7a64f1374a8c76960aa9c2251c899a4f7230dc71a16d5d18", kill_on_drop: false }`
[INFO] [stderr]    Compiling try_opt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "357b03e72c6fd64b7a64f1374a8c76960aa9c2251c899a4f7230dc71a16d5d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "357b03e72c6fd64b7a64f1374a8c76960aa9c2251c899a4f7230dc71a16d5d18", kill_on_drop: false }`
[INFO] [stdout] 357b03e72c6fd64b7a64f1374a8c76960aa9c2251c899a4f7230dc71a16d5d18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5735ae14bcc313f335237c8031aab9b5f67d8677a49a4f1acf04c365d006c044
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5735ae14bcc313f335237c8031aab9b5f67d8677a49a4f1acf04c365d006c044", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/try_opt-1ba96fc8c02d028b
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests try_opt
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - try_opt (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5735ae14bcc313f335237c8031aab9b5f67d8677a49a4f1acf04c365d006c044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5735ae14bcc313f335237c8031aab9b5f67d8677a49a4f1acf04c365d006c044", kill_on_drop: false }`
[INFO] [stdout] 5735ae14bcc313f335237c8031aab9b5f67d8677a49a4f1acf04c365d006c044