[INFO] cloning repository https://github.com/shadowCow/cow-cards-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shadowCow/cow-cards-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FshadowCow%2Fcow-cards-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FshadowCow%2Fcow-cards-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a12a38152ce21cad0af2faef931d437ed5f9317
[INFO] checking shadowCow/cow-cards-rs against try#7424ce9ff9baac3e9d9f5dd3c85828cddea0134d for pr-136776-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FshadowCow%2Fcow-cards-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shadowCow/cow-cards-rs
[INFO] finished tweaking git repo https://github.com/shadowCow/cow-cards-rs
[INFO] tweaked toml for git repo https://github.com/shadowCow/cow-cards-rs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shadowCow/cow-cards-rs on toolchain 7424ce9ff9baac3e9d9f5dd3c85828cddea0134d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shadowCow/cow-cards-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ce25f872915fbc545e639b961bba56e8210db7494a479fb3ed996cc9d3c13f3
[INFO] running `Command { std: "docker" "start" "-a" "5ce25f872915fbc545e639b961bba56e8210db7494a479fb3ed996cc9d3c13f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ce25f872915fbc545e639b961bba56e8210db7494a479fb3ed996cc9d3c13f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ce25f872915fbc545e639b961bba56e8210db7494a479fb3ed996cc9d3c13f3", kill_on_drop: false }`
[INFO] [stdout] 5ce25f872915fbc545e639b961bba56e8210db7494a479fb3ed996cc9d3c13f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 026b1232a1ac18055930281274612b3fd009070235ce642963f7aca5d325fb93
[INFO] running `Command { std: "docker" "start" "-a" "026b1232a1ac18055930281274612b3fd009070235ce642963f7aca5d325fb93", kill_on_drop: false }`
[INFO] [stderr]     Checking cow-cards-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/cards.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]  --> src/cards.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Suit {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rank` is never used
[INFO] [stdout]   --> src/cards.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Rank {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/cards.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Card {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/cards.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Deck {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stdout]    --> src/cards.rs:40:12
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Deck {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  40 |     pub fn new() -> Deck {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]  --> src/cards.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Suit {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rank` is never used
[INFO] [stdout]   --> src/cards.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Rank {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/cards.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Card {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/cards.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Deck {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stdout]    --> src/cards.rs:40:12
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Deck {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  40 |     pub fn new() -> Deck {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "026b1232a1ac18055930281274612b3fd009070235ce642963f7aca5d325fb93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "026b1232a1ac18055930281274612b3fd009070235ce642963f7aca5d325fb93", kill_on_drop: false }`
[INFO] [stdout] 026b1232a1ac18055930281274612b3fd009070235ce642963f7aca5d325fb93
