[INFO] cloning repository https://github.com/yportne13/type-inference-by-example-in-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yportne13/type-inference-by-example-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyportne13%2Ftype-inference-by-example-in-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyportne13%2Ftype-inference-by-example-in-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3818e82f8049f1b7704081483e74c9bd4a988841 [INFO] checking yportne13/type-inference-by-example-in-rust against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyportne13%2Ftype-inference-by-example-in-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/yportne13/type-inference-by-example-in-rust [INFO] finished tweaking git repo https://github.com/yportne13/type-inference-by-example-in-rust [INFO] tweaked toml for git repo https://github.com/yportne13/type-inference-by-example-in-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/yportne13/type-inference-by-example-in-rust on toolchain 36b21637e93b038453924d3c66821089e71d8baa [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/yportne13/type-inference-by-example-in-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" "+36b21637e93b038453924d3c66821089e71d8baa" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 62a74139d30603ec404533285ae4782d8f68df830608e03657cc55c5b986ae15 [INFO] running `Command { std: "docker" "start" "-a" "62a74139d30603ec404533285ae4782d8f68df830608e03657cc55c5b986ae15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "62a74139d30603ec404533285ae4782d8f68df830608e03657cc55c5b986ae15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "62a74139d30603ec404533285ae4782d8f68df830608e03657cc55c5b986ae15", kill_on_drop: false }` [INFO] [stdout] 62a74139d30603ec404533285ae4782d8f68df830608e03657cc55c5b986ae15 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5bbc1d45c12f0939f6a5725ad460758c8072b5b24feb8a82e3d18a2906418b80 [INFO] running `Command { std: "docker" "start" "-a" "5bbc1d45c12f0939f6a5725ad460758c8072b5b24feb8a82e3d18a2906418b80", kill_on_drop: false }` [INFO] [stderr] Checking hindley_milner v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Maybe` and `maybe` [INFO] [stdout] --> src/parser/mod.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{maybe, Maybe, Parser, Span}; [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Maybe` and `maybe` [INFO] [stdout] --> src/parser/mod.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{maybe, Maybe, Parser, Span}; [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `endline` [INFO] [stdout] --> src/parser/lex.rs:102:9 [INFO] [stdout] | [INFO] [stdout] 102 | let endline = pmatch("\n").map(|x| x.map(|y| (y, EndLine))); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_endline` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `endline` [INFO] [stdout] --> src/parser/lex.rs:102:9 [INFO] [stdout] | [INFO] [stdout] 102 | let endline = pmatch("\n").map(|x| x.map(|y| (y, EndLine))); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_endline` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fun` [INFO] [stdout] --> src/parser/mod.rs:176:17 [INFO] [stdout] | [INFO] [stdout] 176 | let (input, fun) = kw(TokenKind::FunKeyword).parse(input)?; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fun` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arrow` [INFO] [stdout] --> src/parser/mod.rs:178:17 [INFO] [stdout] | [INFO] [stdout] 178 | let (input, arrow) = kw(TokenKind::Arrow).parse(input)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_arrow` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `if_kw` [INFO] [stdout] --> src/parser/mod.rs:187:17 [INFO] [stdout] | [INFO] [stdout] 187 | let (input, if_kw) = kw(TokenKind::IfKeyword).parse(input)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_if_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `then_kw` [INFO] [stdout] --> src/parser/mod.rs:189:17 [INFO] [stdout] | [INFO] [stdout] 189 | let (input, then_kw) = kw(TokenKind::ThenKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_then_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `else_kw` [INFO] [stdout] --> src/parser/mod.rs:191:17 [INFO] [stdout] | [INFO] [stdout] 191 | let (input, else_kw) = kw(TokenKind::ElseKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_else_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `keyword` [INFO] [stdout] --> src/parser/mod.rs:212:17 [INFO] [stdout] | [INFO] [stdout] 212 | let (input, keyword) = kw(TokenKind::LetKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `eq` [INFO] [stdout] --> src/parser/mod.rs:214:17 [INFO] [stdout] | [INFO] [stdout] 214 | let (input, eq) = kw(TokenKind::Eq).parse(input)?; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_eq` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/part5/mod.rs:91:16 [INFO] [stdout] | [INFO] [stdout] 91 | if let Constraint::Equality(t1, t2) = constraint { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/part6/mod.rs:183:16 [INFO] [stdout] | [INFO] [stdout] 183 | if let Constraint::CEquality(t1, t2) = constraint { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fun` [INFO] [stdout] --> src/parser/mod.rs:176:17 [INFO] [stdout] | [INFO] [stdout] 176 | let (input, fun) = kw(TokenKind::FunKeyword).parse(input)?; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fun` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arrow` [INFO] [stdout] --> src/parser/mod.rs:178:17 [INFO] [stdout] | [INFO] [stdout] 178 | let (input, arrow) = kw(TokenKind::Arrow).parse(input)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_arrow` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `if_kw` [INFO] [stdout] --> src/parser/mod.rs:187:17 [INFO] [stdout] | [INFO] [stdout] 187 | let (input, if_kw) = kw(TokenKind::IfKeyword).parse(input)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_if_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `then_kw` [INFO] [stdout] --> src/parser/mod.rs:189:17 [INFO] [stdout] | [INFO] [stdout] 189 | let (input, then_kw) = kw(TokenKind::ThenKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_then_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `else_kw` [INFO] [stdout] --> src/parser/mod.rs:191:17 [INFO] [stdout] | [INFO] [stdout] 191 | let (input, else_kw) = kw(TokenKind::ElseKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_else_kw` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `keyword` [INFO] [stdout] --> src/parser/mod.rs:212:17 [INFO] [stdout] | [INFO] [stdout] 212 | let (input, keyword) = kw(TokenKind::LetKeyword).parse(input)?; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `eq` [INFO] [stdout] --> src/parser/mod.rs:214:17 [INFO] [stdout] | [INFO] [stdout] 214 | let (input, eq) = kw(TokenKind::Eq).parse(input)?; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_eq` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Expect` is never used [INFO] [stdout] --> src/parser/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Expect { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/parser/mod.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | Lit(Span<'a, i32>), [INFO] [stdout] | --- ^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Term` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 21 - Lit(Span<'a, i32>), [INFO] [stdout] 21 + Lit(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `hindley_milner` (bin "hindley_milner" test); 13 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/36b21637e93b038453924d3c66821089e71d8baa/bin/rustc --crate-name hindley_milner --edition=2021 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=5df89dd9963ece23 -C extra-filename=-b44e50f3c66534f5 --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 `hindley_milner` (bin "hindley_milner"); 9 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/36b21637e93b038453924d3c66821089e71d8baa/bin/rustc --crate-name hindley_milner --edition=2021 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=e054926be00c521c -C extra-filename=-c27fdf6ff7ecc0f4 --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" "5bbc1d45c12f0939f6a5725ad460758c8072b5b24feb8a82e3d18a2906418b80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5bbc1d45c12f0939f6a5725ad460758c8072b5b24feb8a82e3d18a2906418b80", kill_on_drop: false }` [INFO] [stdout] 5bbc1d45c12f0939f6a5725ad460758c8072b5b24feb8a82e3d18a2906418b80