[INFO] cloning repository https://github.com/hagoraya/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hagoraya/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhagoraya%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhagoraya%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc362234ae38f302f9b2d6c6d051a0036ec274e4
[INFO] checking hagoraya/learn-rust against master#4455c8937007f3cc3c078375a335d86dbab391ce for pr-140956
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhagoraya%2Flearn-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hagoraya/learn-rust
[INFO] finished tweaking git repo https://github.com/hagoraya/learn-rust
[INFO] tweaked toml for git repo https://github.com/hagoraya/learn-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hagoraya/learn-rust on toolchain 4455c8937007f3cc3c078375a335d86dbab391ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hagoraya/learn-rust 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" "+4455c8937007f3cc3c078375a335d86dbab391ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08f091f8555e375d6d42386695e9061545f13b275aa37345eeb151b5930db477
[INFO] running `Command { std: "docker" "start" "-a" "08f091f8555e375d6d42386695e9061545f13b275aa37345eeb151b5930db477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08f091f8555e375d6d42386695e9061545f13b275aa37345eeb151b5930db477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f091f8555e375d6d42386695e9061545f13b275aa37345eeb151b5930db477", kill_on_drop: false }`
[INFO] [stdout] 08f091f8555e375d6d42386695e9061545f13b275aa37345eeb151b5930db477
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccc04bf0d2a0e40df7599efdd7fad0e56befc3ae748727409fd7c50b8bbc49da
[INFO] running `Command { std: "docker" "start" "-a" "ccc04bf0d2a0e40df7599efdd7fad0e56befc3ae748727409fd7c50b8bbc49da", kill_on_drop: false }`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Coin_Data` should have an upper camel case name
[INFO] [stdout]   --> src/enums.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |     enum Coin_Data {
[INFO] [stdout]    |          ^^^^^^^^^ help: convert the identifier to upper camel case: `CoinData`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> src/generics.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     };
[INFO] [stdout]   |      ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]   --> src/structs.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     struct color(u32, u32, u32);
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Coin_Data` should have an upper camel case name
[INFO] [stdout]   --> src/enums.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |     enum Coin_Data {
[INFO] [stdout]    |          ^^^^^^^^^ help: convert the identifier to upper camel case: `CoinData`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> src/generics.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     };
[INFO] [stdout]   |      ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]   --> src/structs.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     struct color(u32, u32, u32);
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/enums.rs:51:31
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Coin_Data::Dime { x, y } => 5,
[INFO] [stdout]    |                               ^ help: try ignoring the field: `x: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/enums.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Coin_Data::Dime { x, y } => 5,
[INFO] [stdout]    |                                  ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/generics.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let list = &vec![1, 2, 3];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/enums.rs:51:31
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Coin_Data::Dime { x, y } => 5,
[INFO] [stdout]    |                               ^ help: try ignoring the field: `x: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/enums.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Coin_Data::Dime { x, y } => 5,
[INFO] [stdout]    |                                  ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel`, `Dime`, and `Quarter` are never constructed
[INFO] [stdout]  --> src/enums.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     enum Coin {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 5 |         Penny,
[INFO] [stdout] 6 |         Nickel,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 7 |         Dime,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 8 |         Quarter,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learning` (bin "learning" test); 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/4455c8937007f3cc3c078375a335d86dbab391ce/bin/rustc --crate-name learning --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=43af845591db8586 -C extra-filename=-8d29a1e4fcaccd5b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `learning` (bin "learning"); 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/4455c8937007f3cc3c078375a335d86dbab391ce/bin/rustc --crate-name learning --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=83411c32fc0cc912 -C extra-filename=-a0f8aa5f2a556276 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ccc04bf0d2a0e40df7599efdd7fad0e56befc3ae748727409fd7c50b8bbc49da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc04bf0d2a0e40df7599efdd7fad0e56befc3ae748727409fd7c50b8bbc49da", kill_on_drop: false }`
[INFO] [stdout] ccc04bf0d2a0e40df7599efdd7fad0e56befc3ae748727409fd7c50b8bbc49da