[INFO] cloning repository https://github.com/kj455/my-parser-combinator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kj455/my-parser-combinator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkj455%2Fmy-parser-combinator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkj455%2Fmy-parser-combinator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 258c98f7886b13235f7a051cfbc4977845f973b1 [INFO] checking kj455/my-parser-combinator against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkj455%2Fmy-parser-combinator" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kj455/my-parser-combinator on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kj455/my-parser-combinator [INFO] finished tweaking git repo https://github.com/kj455/my-parser-combinator [INFO] tweaked toml for git repo https://github.com/kj455/my-parser-combinator written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/kj455/my-parser-combinator 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 217ab55ae2e834f52948b34afd4e28d6d4e09a5c08b6f607526e18d89245dd4f [INFO] running `Command { std: "docker" "start" "-a" "217ab55ae2e834f52948b34afd4e28d6d4e09a5c08b6f607526e18d89245dd4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "217ab55ae2e834f52948b34afd4e28d6d4e09a5c08b6f607526e18d89245dd4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "217ab55ae2e834f52948b34afd4e28d6d4e09a5c08b6f607526e18d89245dd4f", kill_on_drop: false }` [INFO] [stdout] 217ab55ae2e834f52948b34afd4e28d6d4e09a5c08b6f607526e18d89245dd4f [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7b031b5390a69033660c6f7149baa0ba0c4000d9032b0cf9156d402e1cc458d9 [INFO] running `Command { std: "docker" "start" "-a" "7b031b5390a69033660c6f7149baa0ba0c4000d9032b0cf9156d402e1cc458d9", kill_on_drop: false }` [INFO] [stderr] Checking regex-syntax v0.6.27 [INFO] [stderr] Checking once_cell v1.15.0 [INFO] [stderr] Checking aho-corasick v0.7.19 [INFO] [stderr] Checking regex v1.6.0 [INFO] [stderr] Checking parser-combinator v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `char::char`, `digits::digits`, `lexeme::lexeme`, `or::or`, `string::string` [INFO] [stdout] --> src/cat.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | char::char, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 3 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 4 | helper::{parser_closure, Parser}, [INFO] [stdout] 5 | string::string, or::or, lexeme::lexeme, [INFO] [stdout] | ^^^^^^^^^^^^^^ ^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `char::char`, `digits::digits` [INFO] [stdout] --> src/lexeme.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | char::char, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 3 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `digits::digits` [INFO] [stdout] --> src/map.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `digits::digits`, `map::map`, `string::string` [INFO] [stdout] --> src/or.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 3 | helper::{parser_closure, Parser}, [INFO] [stdout] 4 | map::map, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 5 | string::string, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `char::char`, `digits::digits`, `lexeme::lexeme`, `or::or` [INFO] [stdout] --> src/rep.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | char::char, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 3 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 4 | helper::{parser_closure, Parser}, [INFO] [stdout] 5 | lexeme::lexeme, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 6 | or::or, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `char::char`, `digits::digits`, `lexeme::lexeme` [INFO] [stdout] --> src/split.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | char::char, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 5 | digits::digits, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 6 | helper::{parser_closure, Parser}, [INFO] [stdout] 7 | lexeme::lexeme, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexeme::lexeme` [INFO] [stdout] --> src/string.rs:2:39 [INFO] [stdout] | [INFO] [stdout] 2 | helper::{parser_closure, Parser}, lexeme::lexeme, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cat_multiple` is never used [INFO] [stdout] --> src/cat.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn cat_multiple(list: Vec>) -> impl Parser> { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `digits` is never used [INFO] [stdout] --> src/digits.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn digits(s: &str) -> Option<(u64, &str)> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `json_str` should have an upper case name [INFO] [stdout] --> src/main.rs:17:11 [INFO] [stdout] | [INFO] [stdout] 17 | const json_str: &str = r#"{ [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to upper case: `JSON_STR` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `parser` [INFO] [stdout] --> src/cat.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let parser = cat_multiple(list); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `json_str` should have an upper case name [INFO] [stdout] --> src/main.rs:17:11 [INFO] [stdout] | [INFO] [stdout] 17 | const json_str: &str = r#"{ [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to upper case: `JSON_STR` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.72s [INFO] running `Command { std: "docker" "inspect" "7b031b5390a69033660c6f7149baa0ba0c4000d9032b0cf9156d402e1cc458d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b031b5390a69033660c6f7149baa0ba0c4000d9032b0cf9156d402e1cc458d9", kill_on_drop: false }` [INFO] [stdout] 7b031b5390a69033660c6f7149baa0ba0c4000d9032b0cf9156d402e1cc458d9 [INFO] checking kj455/my-parser-combinator against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkj455%2Fmy-parser-combinator" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kj455/my-parser-combinator on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kj455/my-parser-combinator [INFO] finished tweaking git repo https://github.com/kj455/my-parser-combinator [INFO] tweaked toml for git repo https://github.com/kj455/my-parser-combinator written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/kj455/my-parser-combinator 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5eaae7a9c30177bacc75cc484880bc58b779de180de01ea9f2a5f51f52cffd82 [INFO] running `Command { std: "docker" "start" "-a" "5eaae7a9c30177bacc75cc484880bc58b779de180de01ea9f2a5f51f52cffd82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5eaae7a9c30177bacc75cc484880bc58b779de180de01ea9f2a5f51f52cffd82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5eaae7a9c30177bacc75cc484880bc58b779de180de01ea9f2a5f51f52cffd82", kill_on_drop: false }` [INFO] [stdout] 5eaae7a9c30177bacc75cc484880bc58b779de180de01ea9f2a5f51f52cffd82 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c889df857c0042918ab84ab65e5971552a377adc8b1908aed3a108375d15ed79 [INFO] running `Command { std: "docker" "start" "-a" "c889df857c0042918ab84ab65e5971552a377adc8b1908aed3a108375d15ed79", kill_on_drop: false }` [INFO] [stderr] Checking regex-syntax v0.6.27 [INFO] [stderr] Checking once_cell v1.15.0 [INFO] [stderr] Checking aho-corasick v0.7.19 [INFO] [stderr] Checking regex v1.6.0 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13 [INFO] [stdout] | [INFO] [stdout] 848 | / match dfa::Fsm::reverse( [INFO] [stdout] 849 | | &self.ro.dfa_reverse, [INFO] [stdout] 850 | | self.cache.value(), [INFO] [stdout] 851 | | false, [INFO] [stdout] ... | [INFO] [stdout] 862 | | Quit => return Some(Quit), [INFO] [stdout] 863 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "c889df857c0042918ab84ab65e5971552a377adc8b1908aed3a108375d15ed79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c889df857c0042918ab84ab65e5971552a377adc8b1908aed3a108375d15ed79", kill_on_drop: false }` [INFO] [stdout] c889df857c0042918ab84ab65e5971552a377adc8b1908aed3a108375d15ed79