[INFO] fetching crate syn-ext 0.3.0...
[INFO] testing syn-ext-0.3.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate syn-ext 0.3.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate syn-ext 0.3.0 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 syn-ext 0.3.0
[INFO] finished tweaking crates.io crate syn-ext 0.3.0
[INFO] tweaked toml for crates.io crate syn-ext 0.3.0 written to /workspace/builds/worker-19/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-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] c6f41925b8508d62f5f89e5598b038cd0786461121102a95298001d36472964f
[INFO] running `Command { std: "docker" "start" "-a" "c6f41925b8508d62f5f89e5598b038cd0786461121102a95298001d36472964f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6f41925b8508d62f5f89e5598b038cd0786461121102a95298001d36472964f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f41925b8508d62f5f89e5598b038cd0786461121102a95298001d36472964f", kill_on_drop: false }`
[INFO] [stdout] c6f41925b8508d62f5f89e5598b038cd0786461121102a95298001d36472964f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] ec0cba05b351372c8acb6fa3b813adc6d7774a4a0c01bcf13dcbde676878301b
[INFO] running `Command { std: "docker" "start" "-a" "ec0cba05b351372c8acb6fa3b813adc6d7774a4a0c01bcf13dcbde676878301b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn-ext v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.92s
[INFO] running `Command { std: "docker" "inspect" "ec0cba05b351372c8acb6fa3b813adc6d7774a4a0c01bcf13dcbde676878301b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0cba05b351372c8acb6fa3b813adc6d7774a4a0c01bcf13dcbde676878301b", kill_on_drop: false }`
[INFO] [stdout] ec0cba05b351372c8acb6fa3b813adc6d7774a4a0c01bcf13dcbde676878301b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] cc550ef100584881bbfe16dfab37ac159babf5f805ecbe50f7a77ae249095c6c
[INFO] running `Command { std: "docker" "start" "-a" "cc550ef100584881bbfe16dfab37ac159babf5f805ecbe50f7a77ae249095c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn-ext v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "cc550ef100584881bbfe16dfab37ac159babf5f805ecbe50f7a77ae249095c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc550ef100584881bbfe16dfab37ac159babf5f805ecbe50f7a77ae249095c6c", kill_on_drop: false }`
[INFO] [stdout] cc550ef100584881bbfe16dfab37ac159babf5f805ecbe50f7a77ae249095c6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 2dea2dade05fb73fe7adc650419f467880a4bfeeca92c3f24fd19c87b9cedb2f
[INFO] running `Command { std: "docker" "start" "-a" "2dea2dade05fb73fe7adc650419f467880a4bfeeca92c3f24fd19c87b9cedb2f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/syn_ext-bd05b586b4831287)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test attribute::test::test_promoted_list ... ok
[INFO] [stdout] test punctuated::test::test_remove ... ok
[INFO] [stdout] test attribute::test::test_try_meta_mut ... ok
[INFO] [stdout] test attribute::test::run_test_meta_round_trip ... 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 syn-ext
[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" "2dea2dade05fb73fe7adc650419f467880a4bfeeca92c3f24fd19c87b9cedb2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dea2dade05fb73fe7adc650419f467880a4bfeeca92c3f24fd19c87b9cedb2f", kill_on_drop: false }`
[INFO] [stdout] 2dea2dade05fb73fe7adc650419f467880a4bfeeca92c3f24fd19c87b9cedb2f