[INFO] fetching crate include-dir-macro 0.2.0...
[INFO] testing include-dir-macro-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate include-dir-macro 0.2.0 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate include-dir-macro 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate include-dir-macro 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate include-dir-macro 0.2.0
[INFO] tweaked toml for crates.io crate include-dir-macro 0.2.0 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate crates.io crate include-dir-macro 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9ae146f3a1eeb8c61dc0d3116824084da907de1b24bb75b82281f46af674e6b
[INFO] running `Command { std: "docker" "start" "-a" "c9ae146f3a1eeb8c61dc0d3116824084da907de1b24bb75b82281f46af674e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ae146f3a1eeb8c61dc0d3116824084da907de1b24bb75b82281f46af674e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ae146f3a1eeb8c61dc0d3116824084da907de1b24bb75b82281f46af674e6b", kill_on_drop: false }`
[INFO] [stdout] c9ae146f3a1eeb8c61dc0d3116824084da907de1b24bb75b82281f46af674e6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4b5c5b1501bbec38de288d32ffdb7e3ead4cc64457a8ee9e23f04e9a83c29c5
[INFO] running `Command { std: "docker" "start" "-a" "c4b5c5b1501bbec38de288d32ffdb7e3ead4cc64457a8ee9e23f04e9a83c29c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling include-dir-macro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "c4b5c5b1501bbec38de288d32ffdb7e3ead4cc64457a8ee9e23f04e9a83c29c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4b5c5b1501bbec38de288d32ffdb7e3ead4cc64457a8ee9e23f04e9a83c29c5", kill_on_drop: false }`
[INFO] [stdout] c4b5c5b1501bbec38de288d32ffdb7e3ead4cc64457a8ee9e23f04e9a83c29c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f2b3eed513abce4261b3a3cf62a372fe6502f016a71e8bfcaa11a0e7a2f76c5
[INFO] running `Command { std: "docker" "start" "-a" "1f2b3eed513abce4261b3a3cf62a372fe6502f016a71e8bfcaa11a0e7a2f76c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling include-dir-macro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/poems.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `include-dir-macro` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1f2b3eed513abce4261b3a3cf62a372fe6502f016a71e8bfcaa11a0e7a2f76c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2b3eed513abce4261b3a3cf62a372fe6502f016a71e8bfcaa11a0e7a2f76c5", kill_on_drop: false }`
[INFO] [stdout] 1f2b3eed513abce4261b3a3cf62a372fe6502f016a71e8bfcaa11a0e7a2f76c5