[INFO] cloning repository https://github.com/Aloxaf/leetcode_prelude
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aloxaf/leetcode_prelude" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAloxaf%2Fleetcode_prelude", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAloxaf%2Fleetcode_prelude'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffab9e5a6fb780bb89edbd60eb1d9aae0b3115dc
[INFO] checking Aloxaf/leetcode_prelude against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAloxaf%2Fleetcode_prelude" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Aloxaf/leetcode_prelude
[INFO] finished tweaking git repo https://github.com/Aloxaf/leetcode_prelude
[INFO] tweaked toml for git repo https://github.com/Aloxaf/leetcode_prelude written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aloxaf/leetcode_prelude on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54b7145d3284c686b936d792d667b93b45fcf55eed1208aa32e4a80fc2f297c3
[INFO] running `Command { std: "docker" "start" "-a" "54b7145d3284c686b936d792d667b93b45fcf55eed1208aa32e4a80fc2f297c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54b7145d3284c686b936d792d667b93b45fcf55eed1208aa32e4a80fc2f297c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54b7145d3284c686b936d792d667b93b45fcf55eed1208aa32e4a80fc2f297c3", kill_on_drop: false }`
[INFO] [stdout] 54b7145d3284c686b936d792d667b93b45fcf55eed1208aa32e4a80fc2f297c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8fa5407d9842cbd90951ae2ca3dad8f8ad394e85b0a866c6368929050c4dfcd
[INFO] running `Command { std: "docker" "start" "-a" "c8fa5407d9842cbd90951ae2ca3dad8f8ad394e85b0a866c6368929050c4dfcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]     Checking leetcode_test v0.1.1 (/opt/rustwide/workdir/leetcode_test)
[INFO] [stderr]     Checking leetcode_prelude v0.2.2 (/opt/rustwide/workdir/leetcode_prelude)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> leetcode_test/tests/test.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `assert_eq_sorted` and `vec_string`
[INFO] [stdout]   --> leetcode_prelude/src/lib.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use super::{assert_eq_sorted, vec_string};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode_test` (test "test") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c8fa5407d9842cbd90951ae2ca3dad8f8ad394e85b0a866c6368929050c4dfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fa5407d9842cbd90951ae2ca3dad8f8ad394e85b0a866c6368929050c4dfcd", kill_on_drop: false }`
[INFO] [stdout] c8fa5407d9842cbd90951ae2ca3dad8f8ad394e85b0a866c6368929050c4dfcd
