[INFO] cloning repository https://github.com/lemonadern/thompson-construction
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lemonadern/thompson-construction" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemonadern%2Fthompson-construction", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemonadern%2Fthompson-construction'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b13ce87eb0a665571b8e91fa88c5ba15b39de756
[INFO] testing lemonadern/thompson-construction against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemonadern%2Fthompson-construction" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lemonadern/thompson-construction
[INFO] finished tweaking git repo https://github.com/lemonadern/thompson-construction
[INFO] tweaked toml for git repo https://github.com/lemonadern/thompson-construction written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lemonadern/thompson-construction on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lemonadern/thompson-construction 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d038632295c8ba84b4d36e5c986f535ca7856b001676217945b9558d92895049
[INFO] running `Command { std: "docker" "start" "-a" "d038632295c8ba84b4d36e5c986f535ca7856b001676217945b9558d92895049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d038632295c8ba84b4d36e5c986f535ca7856b001676217945b9558d92895049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d038632295c8ba84b4d36e5c986f535ca7856b001676217945b9558d92895049", kill_on_drop: false }`
[INFO] [stdout] d038632295c8ba84b4d36e5c986f535ca7856b001676217945b9558d92895049
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15763e4a26d877d66ae8621b0990eea330c6a2a49c0e27ac60157579a5ddd6f8
[INFO] running `Command { std: "docker" "start" "-a" "15763e4a26d877d66ae8621b0990eea330c6a2a49c0e27ac60157579a5ddd6f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling thompson_construction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed for `Stack<_>`
[INFO] [stdout]   --> src/nfa.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut stack = Stack::new();
[INFO] [stdout]    |         ^^^^^^^^^   ------------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `stack` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut stack: Stack<T> = Stack::new();
[INFO] [stdout]    |                  ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thompson_construction` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "15763e4a26d877d66ae8621b0990eea330c6a2a49c0e27ac60157579a5ddd6f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15763e4a26d877d66ae8621b0990eea330c6a2a49c0e27ac60157579a5ddd6f8", kill_on_drop: false }`
[INFO] [stdout] 15763e4a26d877d66ae8621b0990eea330c6a2a49c0e27ac60157579a5ddd6f8