[INFO] fetching crate tref 0.1.1...
[INFO] testing tref-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tref 0.1.1 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate tref 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 tref 0.1.1
[INFO] finished tweaking crates.io crate tref 0.1.1
[INFO] tweaked toml for crates.io crate tref 0.1.1 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate crates.io crate tref 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 9a50bd4272f313142fd1f5c6014952f4b8c532ec95dea060086f41997a0cf9f8
[INFO] running `Command { std: "docker" "start" "-a" "9a50bd4272f313142fd1f5c6014952f4b8c532ec95dea060086f41997a0cf9f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a50bd4272f313142fd1f5c6014952f4b8c532ec95dea060086f41997a0cf9f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a50bd4272f313142fd1f5c6014952f4b8c532ec95dea060086f41997a0cf9f8", kill_on_drop: false }`
[INFO] [stdout] 9a50bd4272f313142fd1f5c6014952f4b8c532ec95dea060086f41997a0cf9f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 4d4ff044a6957fbbacf830ba94f3fd237de85921a37e7edb307413a96563ccda
[INFO] running `Command { std: "docker" "start" "-a" "4d4ff044a6957fbbacf830ba94f3fd237de85921a37e7edb307413a96563ccda", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling tref v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.63s
[INFO] running `Command { std: "docker" "inspect" "4d4ff044a6957fbbacf830ba94f3fd237de85921a37e7edb307413a96563ccda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d4ff044a6957fbbacf830ba94f3fd237de85921a37e7edb307413a96563ccda", kill_on_drop: false }`
[INFO] [stdout] 4d4ff044a6957fbbacf830ba94f3fd237de85921a37e7edb307413a96563ccda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 4753f13a620d0ed647eada71b036f8a65ed6a9c2551b96a0b1513f09fc6c4cd2
[INFO] running `Command { std: "docker" "start" "-a" "4753f13a620d0ed647eada71b036f8a65ed6a9c2551b96a0b1513f09fc6c4cd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling tref v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "4753f13a620d0ed647eada71b036f8a65ed6a9c2551b96a0b1513f09fc6c4cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4753f13a620d0ed647eada71b036f8a65ed6a9c2551b96a0b1513f09fc6c4cd2", kill_on_drop: false }`
[INFO] [stdout] 4753f13a620d0ed647eada71b036f8a65ed6a9c2551b96a0b1513f09fc6c4cd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 1b659972040e2348c639ed3c0f3c8f5f405f9f7660cdd7354d3c727bdb9cfd25
[INFO] running `Command { std: "docker" "start" "-a" "1b659972040e2348c639ed3c0f3c8f5f405f9f7660cdd7354d3c727bdb9cfd25", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tref-5ad01011fe750275)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::check_generate ... ok
[INFO] [stdout] test tests::check_dialect_enum ... ok
[INFO] [stdout] test tests::check_bfs_iter ... ok
[INFO] [stdout] test tests::check_find_node ... ok
[INFO] [stdout] test tests::check_forest_integrity ... ok
[INFO] [stdout] test tests::check_dialect ... ok
[INFO] [stdout] test tests::check_modify_tree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tref-cda0383ca58372a6)
[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" "1b659972040e2348c639ed3c0f3c8f5f405f9f7660cdd7354d3c727bdb9cfd25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b659972040e2348c639ed3c0f3c8f5f405f9f7660cdd7354d3c727bdb9cfd25", kill_on_drop: false }`
[INFO] [stdout] 1b659972040e2348c639ed3c0f3c8f5f405f9f7660cdd7354d3c727bdb9cfd25