[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 try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgroencode%2Frust_random_card" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/groencode/rust_random_card on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de4589e4aaa11415f0945ae8d4bf56424fa32cb7f55947a34bec689ff7eb0c52
[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" "de4589e4aaa11415f0945ae8d4bf56424fa32cb7f55947a34bec689ff7eb0c52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de4589e4aaa11415f0945ae8d4bf56424fa32cb7f55947a34bec689ff7eb0c52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de4589e4aaa11415f0945ae8d4bf56424fa32cb7f55947a34bec689ff7eb0c52", kill_on_drop: false }`
[INFO] [stdout] de4589e4aaa11415f0945ae8d4bf56424fa32cb7f55947a34bec689ff7eb0c52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fea84bcf7bce0176b3cee1e9b48bf0a21ee371524ce623a50192c99cd3fe54ce
[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" "fea84bcf7bce0176b3cee1e9b48bf0a21ee371524ce623a50192c99cd3fe54ce", kill_on_drop: false }`
[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] [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] 
[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: 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: build failed
[INFO] running `Command { std: "docker" "inspect" "fea84bcf7bce0176b3cee1e9b48bf0a21ee371524ce623a50192c99cd3fe54ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea84bcf7bce0176b3cee1e9b48bf0a21ee371524ce623a50192c99cd3fe54ce", kill_on_drop: false }`
[INFO] [stdout] fea84bcf7bce0176b3cee1e9b48bf0a21ee371524ce623a50192c99cd3fe54ce