[INFO] fetching crate rpni 0.1.1...
[INFO] testing rpni-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate rpni 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rpni 0.1.1 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] removed /workspace/builds/worker-1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate rpni 0.1.1
[INFO] finished tweaking crates.io crate rpni 0.1.1
[INFO] tweaked toml for crates.io crate rpni 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rpni 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-chars v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 2cc049eaf0f77463f6c37b755c7a9fd026a66133c865e171840e3a27a1abc90f
[INFO] running `Command { std: "docker" "start" "-a" "2cc049eaf0f77463f6c37b755c7a9fd026a66133c865e171840e3a27a1abc90f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc049eaf0f77463f6c37b755c7a9fd026a66133c865e171840e3a27a1abc90f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc049eaf0f77463f6c37b755c7a9fd026a66133c865e171840e3a27a1abc90f", kill_on_drop: false }`
[INFO] [stdout] 2cc049eaf0f77463f6c37b755c7a9fd026a66133c865e171840e3a27a1abc90f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 9a98ee66478c07f0c7b8e0f37f7489f70b719e06684d6f2d012fee627c19d3b4
[INFO] running `Command { std: "docker" "start" "-a" "9a98ee66478c07f0c7b8e0f37f7489f70b719e06684d6f2d012fee627c19d3b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling utf8-chars v1.0.2
[INFO] [stderr]    Compiling rpni v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "9a98ee66478c07f0c7b8e0f37f7489f70b719e06684d6f2d012fee627c19d3b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a98ee66478c07f0c7b8e0f37f7489f70b719e06684d6f2d012fee627c19d3b4", kill_on_drop: false }`
[INFO] [stdout] 9a98ee66478c07f0c7b8e0f37f7489f70b719e06684d6f2d012fee627c19d3b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cee6a8fa245ef3e651825ca354d9abb35826d5520210c9d517abffcf4b3997cd
[INFO] running `Command { std: "docker" "start" "-a" "cee6a8fa245ef3e651825ca354d9abb35826d5520210c9d517abffcf4b3997cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rpni v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(assert_matches))]
[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 `rpni` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cee6a8fa245ef3e651825ca354d9abb35826d5520210c9d517abffcf4b3997cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee6a8fa245ef3e651825ca354d9abb35826d5520210c9d517abffcf4b3997cd", kill_on_drop: false }`
[INFO] [stdout] cee6a8fa245ef3e651825ca354d9abb35826d5520210c9d517abffcf4b3997cd