[INFO] fetching crate kamikaze_di_derive 0.1.0...
[INFO] testing kamikaze_di_derive-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate kamikaze_di_derive 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate kamikaze_di_derive 0.1.0 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 kamikaze_di_derive 0.1.0
[INFO] finished tweaking crates.io crate kamikaze_di_derive 0.1.0
[INFO] tweaked toml for crates.io crate kamikaze_di_derive 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kamikaze_di v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 49e5eee1ccd1789706ef365e0c17cc9fd840a9e5dd7e380d9171045a767c6698
[INFO] running `Command { std: "docker" "start" "-a" "49e5eee1ccd1789706ef365e0c17cc9fd840a9e5dd7e380d9171045a767c6698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49e5eee1ccd1789706ef365e0c17cc9fd840a9e5dd7e380d9171045a767c6698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e5eee1ccd1789706ef365e0c17cc9fd840a9e5dd7e380d9171045a767c6698", kill_on_drop: false }`
[INFO] [stdout] 49e5eee1ccd1789706ef365e0c17cc9fd840a9e5dd7e380d9171045a767c6698
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 8f6d232e993dbab8b4ee6f49c3793ecbc3d41c469889f749873734c211259459
[INFO] running `Command { std: "docker" "start" "-a" "8f6d232e993dbab8b4ee6f49c3793ecbc3d41c469889f749873734c211259459", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling kamikaze_di_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.74s
[INFO] running `Command { std: "docker" "inspect" "8f6d232e993dbab8b4ee6f49c3793ecbc3d41c469889f749873734c211259459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f6d232e993dbab8b4ee6f49c3793ecbc3d41c469889f749873734c211259459", kill_on_drop: false }`
[INFO] [stdout] 8f6d232e993dbab8b4ee6f49c3793ecbc3d41c469889f749873734c211259459
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] d5ed5392b75925bf69812c08a81f1c8ecccd703f19a03d745e5de5b1e4da8342
[INFO] running `Command { std: "docker" "start" "-a" "d5ed5392b75925bf69812c08a81f1c8ecccd703f19a03d745e5de5b1e4da8342", kill_on_drop: false }`
[INFO] [stderr]    Compiling kamikaze_di v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kamikaze_di-0.1.0/src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | #![feature(specialization)]
[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 `kamikaze_di` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d5ed5392b75925bf69812c08a81f1c8ecccd703f19a03d745e5de5b1e4da8342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ed5392b75925bf69812c08a81f1c8ecccd703f19a03d745e5de5b1e4da8342", kill_on_drop: false }`
[INFO] [stdout] d5ed5392b75925bf69812c08a81f1c8ecccd703f19a03d745e5de5b1e4da8342