[INFO] cloning repository https://github.com/cjsoltermann/rust-cards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cjsoltermann/rust-cards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjsoltermann%2Frust-cards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjsoltermann%2Frust-cards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02a2ce2cc0d26f4b7b91f3cedd8e8610ebb6380e
[INFO] checking cjsoltermann/rust-cards against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjsoltermann%2Frust-cards" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cjsoltermann/rust-cards 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/cjsoltermann/rust-cards
[INFO] finished tweaking git repo https://github.com/cjsoltermann/rust-cards
[INFO] tweaked toml for git repo https://github.com/cjsoltermann/rust-cards written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/cjsoltermann/rust-cards 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 048c7e4b491a231a4e1029e1bd47c08f3d56654151c3e72030283b822af53ff2
[INFO] running `Command { std: "docker" "start" "-a" "048c7e4b491a231a4e1029e1bd47c08f3d56654151c3e72030283b822af53ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "048c7e4b491a231a4e1029e1bd47c08f3d56654151c3e72030283b822af53ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "048c7e4b491a231a4e1029e1bd47c08f3d56654151c3e72030283b822af53ff2", kill_on_drop: false }`
[INFO] [stdout] 048c7e4b491a231a4e1029e1bd47c08f3d56654151c3e72030283b822af53ff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f7d44fc1789db4648fd3b2db013c5df64d0e453dd7d4b09b9244b91b04840811
[INFO] running `Command { std: "docker" "start" "-a" "f7d44fc1789db4648fd3b2db013c5df64d0e453dd7d4b09b9244b91b04840811", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking thing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `enemy_hand`
[INFO] [stdout]    --> src/main.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let mut enemy_hand = deck.draw_hand(7);
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enemy_hand`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `enemy_hand`
[INFO] [stdout]    --> src/main.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let mut enemy_hand = deck.draw_hand(7);
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enemy_hand`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let mut enemy_hand = deck.draw_hand(7);
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/main.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn iter(&self) -> slice::Iter<Card> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let mut enemy_hand = deck.draw_hand(7);
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/main.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn iter(&self) -> slice::Iter<Card> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.88s
[INFO] running `Command { std: "docker" "inspect" "f7d44fc1789db4648fd3b2db013c5df64d0e453dd7d4b09b9244b91b04840811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d44fc1789db4648fd3b2db013c5df64d0e453dd7d4b09b9244b91b04840811", kill_on_drop: false }`
[INFO] [stdout] f7d44fc1789db4648fd3b2db013c5df64d0e453dd7d4b09b9244b91b04840811