[INFO] fetching crate shell-hooks 0.1.2...
[INFO] testing shell-hooks-0.1.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate shell-hooks 0.1.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate shell-hooks 0.1.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shell-hooks 0.1.2
[INFO] finished tweaking crates.io crate shell-hooks 0.1.2
[INFO] tweaked toml for crates.io crate shell-hooks 0.1.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b7cc888ffe531969b8370655808a91508f206c649e2e3e6f1d5c8289b5fc14c
[INFO] running `Command { std: "docker" "start" "-a" "5b7cc888ffe531969b8370655808a91508f206c649e2e3e6f1d5c8289b5fc14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b7cc888ffe531969b8370655808a91508f206c649e2e3e6f1d5c8289b5fc14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b7cc888ffe531969b8370655808a91508f206c649e2e3e6f1d5c8289b5fc14c", kill_on_drop: false }`
[INFO] [stdout] 5b7cc888ffe531969b8370655808a91508f206c649e2e3e6f1d5c8289b5fc14c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6224368fb42e731bb3337e8cc3061e578b4297f1bfff5ac9a8f0c13e308196b3
[INFO] running `Command { std: "docker" "start" "-a" "6224368fb42e731bb3337e8cc3061e578b4297f1bfff5ac9a8f0c13e308196b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling shell-hooks v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/shell-hooks.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `vec_remove_item`
[INFO] [stdout]  --> src/bin/shell-hooks.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shell-hooks` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "6224368fb42e731bb3337e8cc3061e578b4297f1bfff5ac9a8f0c13e308196b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6224368fb42e731bb3337e8cc3061e578b4297f1bfff5ac9a8f0c13e308196b3", kill_on_drop: false }`
[INFO] [stdout] 6224368fb42e731bb3337e8cc3061e578b4297f1bfff5ac9a8f0c13e308196b3