[INFO] cloning repository https://github.com/SLMT/six-nimmt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SLMT/six-nimmt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSLMT%2Fsix-nimmt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSLMT%2Fsix-nimmt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31c07f4aa92c66915b08ec9423a6eb5391b7a3df
[INFO] checking SLMT/six-nimmt against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSLMT%2Fsix-nimmt" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SLMT/six-nimmt on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SLMT/six-nimmt
[INFO] finished tweaking git repo https://github.com/SLMT/six-nimmt
[INFO] tweaked toml for git repo https://github.com/SLMT/six-nimmt written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SLMT/six-nimmt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21f067b12346a9d8845dcd7bcdfaad5649d936ab1392f474d3830576926ca4ba
[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" "21f067b12346a9d8845dcd7bcdfaad5649d936ab1392f474d3830576926ca4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21f067b12346a9d8845dcd7bcdfaad5649d936ab1392f474d3830576926ca4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f067b12346a9d8845dcd7bcdfaad5649d936ab1392f474d3830576926ca4ba", kill_on_drop: false }`
[INFO] [stdout] 21f067b12346a9d8845dcd7bcdfaad5649d936ab1392f474d3830576926ca4ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaa56f9a900121864f32768a11c40d042cae5535cc2d2c8abc7660df6e587dbf
[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" "aaa56f9a900121864f32768a11c40d042cae5535cc2d2c8abc7660df6e587dbf", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking six-nimmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/game.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     Some(card) => {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/game.rs:56:31
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn put_in_line(&mut self, card: Card) {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chosen_hand`
[INFO] [stdout]   --> src/ui.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let chosen_hand = read_card_choice();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chosen_hand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `**player` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/game.rs:44:23
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 match player.take_card(card_id) {
[INFO] [stdout]    |                       ^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/game.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     Some(card) => {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/game.rs:56:31
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn put_in_line(&mut self, card: Card) {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chosen_hand`
[INFO] [stdout]   --> src/ui.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let chosen_hand = read_card_choice();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chosen_hand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `**player` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/game.rs:44:23
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 match player.take_card(card_id) {
[INFO] [stdout]    |                       ^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `six-nimmt`
[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; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "aaa56f9a900121864f32768a11c40d042cae5535cc2d2c8abc7660df6e587dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaa56f9a900121864f32768a11c40d042cae5535cc2d2c8abc7660df6e587dbf", kill_on_drop: false }`
[INFO] [stdout] aaa56f9a900121864f32768a11c40d042cae5535cc2d2c8abc7660df6e587dbf