[INFO] fetching crate mamba 0.3.0... [INFO] checking mamba-0.3.0 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] extracting crate mamba 0.3.0 into /workspace/builds/worker-24/source [INFO] validating manifest of crates.io crate mamba 0.3.0 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mamba 0.3.0 [INFO] finished tweaking crates.io crate mamba 0.3.0 [INFO] tweaked toml for crates.io crate mamba 0.3.0 written to /workspace/builds/worker-24/source/Cargo.toml [INFO] crate crates.io crate mamba 0.3.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 79a2652240f9fac0d1c6cf23886366a2e904c9ae41b447f10eb4e1c18cfe5191 [INFO] running `Command { std: "docker" "start" "-a" "79a2652240f9fac0d1c6cf23886366a2e904c9ae41b447f10eb4e1c18cfe5191", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "79a2652240f9fac0d1c6cf23886366a2e904c9ae41b447f10eb4e1c18cfe5191", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79a2652240f9fac0d1c6cf23886366a2e904c9ae41b447f10eb4e1c18cfe5191", kill_on_drop: false }` [INFO] [stdout] 79a2652240f9fac0d1c6cf23886366a2e904c9ae41b447f10eb4e1c18cfe5191 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 88a106fd5505fc7e971d9bf4236153db0a454c9aba96ae5dd4b93212e6b84767 [INFO] running `Command { std: "docker" "start" "-a" "88a106fd5505fc7e971d9bf4236153db0a454c9aba96ae5dd4b93212e6b84767", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling proc-macro2 v1.0.7 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling escargot v0.3.1 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking bytecount v0.3.2 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking wtf8 v0.0.3 [INFO] [stderr] Checking unicode_names2 v0.2.2 [INFO] [stderr] Checking unicode-xid v0.1.0 [INFO] [stderr] Checking glob v0.3.0 [INFO] [stderr] Checking pathdiff v0.1.0 [INFO] [stderr] Compiling num-traits v0.2.10 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Compiling num-bigint v0.2.4 [INFO] [stderr] Checking predicates v1.0.2 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking loggerv v0.7.2 [INFO] [stderr] Checking nom_locate v0.3.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking python-parser v0.1.0 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Checking serde_json v1.0.44 [INFO] [stderr] Checking assert_cmd v0.10.2 [INFO] [stderr] Checking mamba v0.3.0 (/tmp/fixit) [INFO] [stderr] Migrating src/lib.rs from 2018 edition to 2021 [INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `mamba` [INFO] [stderr] [INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files: [INFO] [stderr] [INFO] [stderr] * src/check/constrain/unify/expression/substitute.rs [INFO] [stderr] * src/lex/token.rs [INFO] [stderr] * src/parse/definition.rs [INFO] [stderr] [INFO] [stderr] This likely indicates a bug in either rustc or cargo itself, [INFO] [stderr] and we would appreciate a bug report! You're likely to see [INFO] [stderr] a number of compiler warnings after this message which cargo [INFO] [stderr] attempted to fix but failed. If you could open an issue at [INFO] [stderr] https://github.com/rust-lang/rust/issues [INFO] [stderr] quoting the full output of this command we'd be very appreciative! [INFO] [stderr] Note that you may be able to make some more progress in the near-term [INFO] [stderr] fixing code with the `--broken-code` flag [INFO] [stderr] [INFO] [stderr] The following errors were reported: [INFO] [stderr] error: expected expression, found `as` [INFO] [stderr] --> src/lex/token.rs:149:11 [INFO] [stderr] | [INFO] [stderr] 149 | } as i32 [INFO] [stderr] | ^^ expected expression [INFO] [stderr] | [INFO] [stderr] help: parentheses are required to parse this as an expression [INFO] [stderr] | [INFO] [stderr] 139 ~ (match self { [INFO] [stderr] 140 | Token::Id(id) => id.len(), [INFO] [stderr] 141 | Token::Real(real) => real.len(), [INFO] [stderr] 142 | Token::Int(int) => int.len(), [INFO] [stderr] 143 | Token::Bool(true) => 4, [INFO] [stderr] 144 | Token::Bool(false) => 5, [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> src/check/constrain/unify/expression/substitute.rs:33:10 [INFO] [stderr] | [INFO] [stderr] 33 | }; [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> src/parse/definition.rs:25:6 [INFO] [stderr] | [INFO] [stderr] 25 | }; [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error; 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Original diagnostics will follow. [INFO] [stderr] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/check/constrain/unify/expression/substitute.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lex/token.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | / (match self { [INFO] [stdout] 140 | | Token::Id(id) => id.len(), [INFO] [stdout] 141 | | Token::Real(real) => real.len(), [INFO] [stdout] 142 | | Token::Int(int) => int.len(), [INFO] [stdout] ... | [INFO] [stdout] 148 | | other => format!("{}", other).len() [INFO] [stdout] 149 | | } as i32) [INFO] [stdout] | |_________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 139 ~ match self { [INFO] [stdout] 140 + Token::Id(id) => id.len(), [INFO] [stdout] 141 + Token::Real(real) => real.len(), [INFO] [stdout] 142 + Token::Int(int) => int.len(), [INFO] [stdout] 143 + Token::Bool(true) => 4, [INFO] [stdout] 144 + Token::Bool(false) => 5, [INFO] [stdout] ... [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/parse/definition.rs:25:6 [INFO] [stdout] | [INFO] [stdout] 25 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/check/constrain/unify/expression/substitute.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lex/token.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | / (match self { [INFO] [stdout] 140 | | Token::Id(id) => id.len(), [INFO] [stdout] 141 | | Token::Real(real) => real.len(), [INFO] [stdout] 142 | | Token::Int(int) => int.len(), [INFO] [stdout] ... | [INFO] [stdout] 148 | | other => format!("{}", other).len() [INFO] [stdout] 149 | | } as i32) [INFO] [stdout] | |_________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 139 ~ match self { [INFO] [stdout] 140 + Token::Id(id) => id.len(), [INFO] [stdout] 141 + Token::Real(real) => real.len(), [INFO] [stdout] 142 + Token::Int(int) => int.len(), [INFO] [stdout] 143 + Token::Bool(true) => 4, [INFO] [stdout] 144 + Token::Bool(false) => 5, [INFO] [stdout] ... [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/parse/definition.rs:25:6 [INFO] [stdout] | [INFO] [stdout] 25 | }; [INFO] [stdout] | ^ help: remove this semicolon [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] Migrating tests/common.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] Migrating tests/main.rs from 2018 edition to 2021 [INFO] [stderr] Fixed tests/desugar/expression_and_statements.rs (1 fix) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 32.43s [INFO] [stderr] Running `cargo check` to verify 2021 [INFO] [stderr] Checking mamba v0.3.0 (/tmp/fixit) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/check/constrain/unify/expression/substitute.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lex/token.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | / (match self { [INFO] [stdout] 140 | | Token::Id(id) => id.len(), [INFO] [stdout] 141 | | Token::Real(real) => real.len(), [INFO] [stdout] 142 | | Token::Int(int) => int.len(), [INFO] [stdout] ... | [INFO] [stdout] 148 | | other => format!("{}", other).len() [INFO] [stdout] 149 | | } as i32) [INFO] [stdout] | |_________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 139 ~ match self { [INFO] [stdout] 140 + Token::Id(id) => id.len(), [INFO] [stdout] 141 + Token::Real(real) => real.len(), [INFO] [stdout] 142 + Token::Int(int) => int.len(), [INFO] [stdout] 143 + Token::Bool(true) => 4, [INFO] [stdout] 144 + Token::Bool(false) => 5, [INFO] [stdout] ... [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/parse/definition.rs:25:6 [INFO] [stdout] | [INFO] [stdout] 25 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/check/constrain/unify/expression/substitute.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lex/token.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | / (match self { [INFO] [stdout] 140 | | Token::Id(id) => id.len(), [INFO] [stdout] 141 | | Token::Real(real) => real.len(), [INFO] [stdout] 142 | | Token::Int(int) => int.len(), [INFO] [stdout] ... | [INFO] [stdout] 148 | | other => format!("{}", other).len() [INFO] [stdout] 149 | | } as i32) [INFO] [stdout] | |_________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 139 ~ match self { [INFO] [stdout] 140 + Token::Id(id) => id.len(), [INFO] [stdout] 141 + Token::Real(real) => real.len(), [INFO] [stdout] 142 + Token::Int(int) => int.len(), [INFO] [stdout] 143 + Token::Bool(true) => 4, [INFO] [stdout] 144 + Token::Bool(false) => 5, [INFO] [stdout] ... [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/parse/definition.rs:25:6 [INFO] [stdout] | [INFO] [stdout] 25 | }; [INFO] [stdout] | ^ help: remove this semicolon [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 4.50s [INFO] running `Command { std: "docker" "inspect" "88a106fd5505fc7e971d9bf4236153db0a454c9aba96ae5dd4b93212e6b84767", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "88a106fd5505fc7e971d9bf4236153db0a454c9aba96ae5dd4b93212e6b84767", kill_on_drop: false }` [INFO] [stdout] 88a106fd5505fc7e971d9bf4236153db0a454c9aba96ae5dd4b93212e6b84767