[INFO] fetching crate distinct 0.1.1...
[INFO] checking distinct-0.1.1 against stable for pr-85048-2
[INFO] extracting crate distinct 0.1.1 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate distinct 0.1.1 on toolchain stable
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+stable" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate distinct 0.1.1
[INFO] finished tweaking crates.io crate distinct 0.1.1
[INFO] tweaked toml for crates.io crate distinct 0.1.1 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+stable" "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" "+stable" "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-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+stable" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb8a8bc948edd1e3e4c75307266f936d61a51e3f5eca5ef459787edab96b1701
[INFO] running `Command { std: "docker" "start" "-a" "eb8a8bc948edd1e3e4c75307266f936d61a51e3f5eca5ef459787edab96b1701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb8a8bc948edd1e3e4c75307266f936d61a51e3f5eca5ef459787edab96b1701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb8a8bc948edd1e3e4c75307266f936d61a51e3f5eca5ef459787edab96b1701", kill_on_drop: false }`
[INFO] [stdout] eb8a8bc948edd1e3e4c75307266f936d61a51e3f5eca5ef459787edab96b1701
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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=forbid" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+stable" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb6eda49a5b6ef1edbc2483f53478176bc0b15db11106eb2f65223c178d5c92e
[INFO] running `Command { std: "docker" "start" "-a" "cb6eda49a5b6ef1edbc2483f53478176bc0b15db11106eb2f65223c178d5c92e", kill_on_drop: false }`
[INFO] [stderr]     Checking distinct v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(negative_impls)]
[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] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(negative_impls)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `distinct` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "cb6eda49a5b6ef1edbc2483f53478176bc0b15db11106eb2f65223c178d5c92e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb6eda49a5b6ef1edbc2483f53478176bc0b15db11106eb2f65223c178d5c92e", kill_on_drop: false }`
[INFO] [stdout] cb6eda49a5b6ef1edbc2483f53478176bc0b15db11106eb2f65223c178d5c92e