[INFO] cloning repository https://github.com/bobhacko1112/ciw_1d0-621_flashcards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bobhacko1112/ciw_1d0-621_flashcards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobhacko1112%2Fciw_1d0-621_flashcards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobhacko1112%2Fciw_1d0-621_flashcards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3c4ac187ad94fb61bedbded8401d9d585886742
[INFO] checking bobhacko1112/ciw_1d0-621_flashcards against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobhacko1112%2Fciw_1d0-621_flashcards" "/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/bobhacko1112/ciw_1d0-621_flashcards on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bobhacko1112/ciw_1d0-621_flashcards
[INFO] finished tweaking git repo https://github.com/bobhacko1112/ciw_1d0-621_flashcards
[INFO] tweaked toml for git repo https://github.com/bobhacko1112/ciw_1d0-621_flashcards written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/bobhacko1112/ciw_1d0-621_flashcards already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 706b73682f7bbba219e4fbcfb5d8a2f772104d149324c646bc6ec522dc2f8ed6
[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" "706b73682f7bbba219e4fbcfb5d8a2f772104d149324c646bc6ec522dc2f8ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "706b73682f7bbba219e4fbcfb5d8a2f772104d149324c646bc6ec522dc2f8ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "706b73682f7bbba219e4fbcfb5d8a2f772104d149324c646bc6ec522dc2f8ed6", kill_on_drop: false }`
[INFO] [stdout] 706b73682f7bbba219e4fbcfb5d8a2f772104d149324c646bc6ec522dc2f8ed6
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbe75eeb6e4ad845a66b3c715929a5dd6800355eea5222228b5da8c1f721c9e7
[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" "fbe75eeb6e4ad845a66b3c715929a5dd6800355eea5222228b5da8c1f721c9e7", kill_on_drop: false }`
[INFO] [stderr]     Checking ciw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/main.rs:517:9
[INFO] [stdout]     |
[INFO] [stdout] 517 |     let input = std::io::stdin().read_line(&mut line).expect("Failed to read line");
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/main.rs:517:9
[INFO] [stdout]     |
[INFO] [stdout] 517 |     let input = std::io::stdin().read_line(&mut line).expect("Failed to read line");
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "fbe75eeb6e4ad845a66b3c715929a5dd6800355eea5222228b5da8c1f721c9e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe75eeb6e4ad845a66b3c715929a5dd6800355eea5222228b5da8c1f721c9e7", kill_on_drop: false }`
[INFO] [stdout] fbe75eeb6e4ad845a66b3c715929a5dd6800355eea5222228b5da8c1f721c9e7