[INFO] fetching crate main_error 0.1.1...
[INFO] testing main_error-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate main_error 0.1.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate main_error 0.1.1 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 main_error 0.1.1
[INFO] finished tweaking crates.io crate main_error 0.1.1
[INFO] tweaked toml for crates.io crate main_error 0.1.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate main_error 0.1.1 already has a lockfile, it will not be regenerated
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] d0f4e25297d64d4ef3fcc784ba08ec982514858b9863511a2d095b765a0ea58a
[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" "d0f4e25297d64d4ef3fcc784ba08ec982514858b9863511a2d095b765a0ea58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0f4e25297d64d4ef3fcc784ba08ec982514858b9863511a2d095b765a0ea58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0f4e25297d64d4ef3fcc784ba08ec982514858b9863511a2d095b765a0ea58a", kill_on_drop: false }`
[INFO] [stdout] d0f4e25297d64d4ef3fcc784ba08ec982514858b9863511a2d095b765a0ea58a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] c4f056a6fc294dc789bdb63ad7d6ea069846280915cc184c5ff0f491ab089b5d
[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" "c4f056a6fc294dc789bdb63ad7d6ea069846280915cc184c5ff0f491ab089b5d", 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] [stderr]    Compiling main_error v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "c4f056a6fc294dc789bdb63ad7d6ea069846280915cc184c5ff0f491ab089b5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f056a6fc294dc789bdb63ad7d6ea069846280915cc184c5ff0f491ab089b5d", kill_on_drop: false }`
[INFO] [stdout] c4f056a6fc294dc789bdb63ad7d6ea069846280915cc184c5ff0f491ab089b5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] a6a97637a78832b20d5b8d27d70a91a807862c8f7fb263df839a92e9f0a131db
[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" "a6a97637a78832b20d5b8d27d70a91a807862c8f7fb263df839a92e9f0a131db", kill_on_drop: false }`
[INFO] [stderr]    Compiling main_error v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "a6a97637a78832b20d5b8d27d70a91a807862c8f7fb263df839a92e9f0a131db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a97637a78832b20d5b8d27d70a91a807862c8f7fb263df839a92e9f0a131db", kill_on_drop: false }`
[INFO] [stdout] a6a97637a78832b20d5b8d27d70a91a807862c8f7fb263df839a92e9f0a131db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] e15180692265fe8c14f54d4597a805c104413cf39b8af2e97a2974c96c0ddbf7
[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" "e15180692265fe8c14f54d4597a805c104413cf39b8af2e97a2974c96c0ddbf7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/main_error-b1f6b19079fe412b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests main_error
[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] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - MainError (line 109) ... ok
[INFO] [stdout] test src/lib.rs - MainError (line 101) ... ok
[INFO] [stdout] test src/lib.rs - (line 47) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - MainError (line 95) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e15180692265fe8c14f54d4597a805c104413cf39b8af2e97a2974c96c0ddbf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e15180692265fe8c14f54d4597a805c104413cf39b8af2e97a2974c96c0ddbf7", kill_on_drop: false }`
[INFO] [stdout] e15180692265fe8c14f54d4597a805c104413cf39b8af2e97a2974c96c0ddbf7