[INFO] cloning repository https://github.com/huangqian/rust-in-action
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huangqian/rust-in-action" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f36881cede964f6008c95f60cb1004db4fba9cc2
[INFO] checking huangqian/rust-in-action against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huangqian/rust-in-action on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] tweaked toml for git repo https://github.com/huangqian/rust-in-action written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/huangqian/rust-in-action already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-padding v0.1.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42281cd45f1bf2fad3fc8816725d6df5c1cd84c868adb3d22089492552f37a38
[INFO] running `Command { std: "docker" "start" "-a" "42281cd45f1bf2fad3fc8816725d6df5c1cd84c868adb3d22089492552f37a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42281cd45f1bf2fad3fc8816725d6df5c1cd84c868adb3d22089492552f37a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42281cd45f1bf2fad3fc8816725d6df5c1cd84c868adb3d22089492552f37a38", kill_on_drop: false }`
[INFO] [stdout] 42281cd45f1bf2fad3fc8816725d6df5c1cd84c868adb3d22089492552f37a38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 993fa1a087b5e0a14fabe081da1284eb15e789c12ac2921be09d1d188c5f2ada
[INFO] running `Command { std: "docker" "start" "-a" "993fa1a087b5e0a14fabe081da1284eb15e789c12ac2921be09d1d188c5f2ada", kill_on_drop: false }`
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[INFO] [stderr]     Checking rust-in-action v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `borrow`
[INFO] [stdout]   --> examples/borrow.rs:42:2
[INFO] [stdout]    |
[INFO] [stdout] 42 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/borrow.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-in-action` (example "borrow") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0423]: expected value, found struct `LinkedList`
[INFO] [stdout]  --> examples/collection/list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |       LinkedList
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/alloc/src/collections/linked_list.rs:51:1
[INFO] [stdout]  ::: /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/alloc/src/collections/linked_list.rs:54:1
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LinkedList` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-in-action` (example "list") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "993fa1a087b5e0a14fabe081da1284eb15e789c12ac2921be09d1d188c5f2ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "993fa1a087b5e0a14fabe081da1284eb15e789c12ac2921be09d1d188c5f2ada", kill_on_drop: false }`
[INFO] [stdout] 993fa1a087b5e0a14fabe081da1284eb15e789c12ac2921be09d1d188c5f2ada