[INFO] cloning repository https://github.com/groencode/rust_random_card
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/groencode/rust_random_card" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgroencode%2Frust_random_card", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgroencode%2Frust_random_card'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46a607118fbd108858da3c25099e0eb0c984c2f9
[INFO] checking groencode/rust_random_card against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgroencode%2Frust_random_card" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/groencode/rust_random_card on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/groencode/rust_random_card
[INFO] finished tweaking git repo https://github.com/groencode/rust_random_card
[INFO] tweaked toml for git repo https://github.com/groencode/rust_random_card written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/groencode/rust_random_card already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5db0fd49c6e91b1ad9e931ebd3d82ecdf5d5b4b2335a050c81e8d09bbd531de7
[INFO] running `Command { std: "docker" "start" "-a" "5db0fd49c6e91b1ad9e931ebd3d82ecdf5d5b4b2335a050c81e8d09bbd531de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5db0fd49c6e91b1ad9e931ebd3d82ecdf5d5b4b2335a050c81e8d09bbd531de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5db0fd49c6e91b1ad9e931ebd3d82ecdf5d5b4b2335a050c81e8d09bbd531de7", kill_on_drop: false }`
[INFO] [stdout] 5db0fd49c6e91b1ad9e931ebd3d82ecdf5d5b4b2335a050c81e8d09bbd531de7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2164f151e58131512d9c4fcf8c4ee6bea8ecded06e4a9ef57b5e39fde6bbe58
[INFO] running `Command { std: "docker" "start" "-a" "e2164f151e58131512d9c4fcf8c4ee6bea8ecded06e4a9ef57b5e39fde6bbe58", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust_random_card v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:120:32
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn draw_card(&mut self) -> PlayingCard {
[INFO] [stdout]     |        ---------               ^^^^^^^^^^^ expected struct `PlayingCard`, found `()`
[INFO] [stdout]     |        |
[INFO] [stdout]     |        implicitly returns `()` as its body has no tail or `return` expression
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_random_card`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:120:32
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn draw_card(&mut self) -> PlayingCard {
[INFO] [stdout]     |        ---------               ^^^^^^^^^^^ expected struct `PlayingCard`, found `()`
[INFO] [stdout]     |        |
[INFO] [stdout]     |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e2164f151e58131512d9c4fcf8c4ee6bea8ecded06e4a9ef57b5e39fde6bbe58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2164f151e58131512d9c4fcf8c4ee6bea8ecded06e4a9ef57b5e39fde6bbe58", kill_on_drop: false }`
[INFO] [stdout] e2164f151e58131512d9c4fcf8c4ee6bea8ecded06e4a9ef57b5e39fde6bbe58