[INFO] cloning repository https://github.com/WillTer/rusty-cat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WillTer/rusty-cat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWillTer%2Frusty-cat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWillTer%2Frusty-cat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db25bf185847da8e620068ce64fe19e82c94cb7c
[INFO] testing WillTer/rusty-cat against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWillTer%2Frusty-cat" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WillTer/rusty-cat on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WillTer/rusty-cat
[INFO] finished tweaking git repo https://github.com/WillTer/rusty-cat
[INFO] tweaked toml for git repo https://github.com/WillTer/rusty-cat written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/WillTer/rusty-cat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a53bad44aa5a75a7f195d9cc764f9b357d8bdf008140921a24624edc89978e29
[INFO] running `Command { std: "docker" "start" "-a" "a53bad44aa5a75a7f195d9cc764f9b357d8bdf008140921a24624edc89978e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a53bad44aa5a75a7f195d9cc764f9b357d8bdf008140921a24624edc89978e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a53bad44aa5a75a7f195d9cc764f9b357d8bdf008140921a24624edc89978e29", kill_on_drop: false }`
[INFO] [stdout] a53bad44aa5a75a7f195d9cc764f9b357d8bdf008140921a24624edc89978e29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43e8367c1a66ab72c532788ffc48a38028d477e5f4d1ed1ef2bd65bff819d4d2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "43e8367c1a66ab72c532788ffc48a38028d477e5f4d1ed1ef2bd65bff819d4d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-cat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]   --> src/main.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut file = File::open(path)?;
[INFO] [stdout]    |                    ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::fs::File;
[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 E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-cat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "43e8367c1a66ab72c532788ffc48a38028d477e5f4d1ed1ef2bd65bff819d4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43e8367c1a66ab72c532788ffc48a38028d477e5f4d1ed1ef2bd65bff819d4d2", kill_on_drop: false }`
[INFO] [stdout] 43e8367c1a66ab72c532788ffc48a38028d477e5f4d1ed1ef2bd65bff819d4d2