[INFO] cloning repository https://github.com/Lukasz825700516/mcfrs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lukasz825700516/mcfrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 11bc09899c845cf3dd709ace32b2173b0255d0dc [INFO] checking Lukasz825700516/mcfrs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Lukasz825700516/mcfrs 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/Lukasz825700516/mcfrs [INFO] finished tweaking git repo https://github.com/Lukasz825700516/mcfrs [INFO] tweaked toml for git repo https://github.com/Lukasz825700516/mcfrs written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Lukasz825700516/mcfrs 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 29b34372710e85a64663e2ef10e90ce7d6960f2be3d77561fa6c152e472b8726 [INFO] running `Command { std: "docker" "start" "-a" "29b34372710e85a64663e2ef10e90ce7d6960f2be3d77561fa6c152e472b8726", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "29b34372710e85a64663e2ef10e90ce7d6960f2be3d77561fa6c152e472b8726", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "29b34372710e85a64663e2ef10e90ce7d6960f2be3d77561fa6c152e472b8726", kill_on_drop: false }` [INFO] [stdout] 29b34372710e85a64663e2ef10e90ce7d6960f2be3d77561fa6c152e472b8726 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8d0f580a106914aa786129334ce7463f0f2835cb7cbf9789849c2663a2e9f027 [INFO] running `Command { std: "docker" "start" "-a" "8d0f580a106914aa786129334ce7463f0f2835cb7cbf9789849c2663a2e9f027", kill_on_drop: false }` [INFO] [stderr] Compiling typenum v1.14.0 [INFO] [stderr] Checking cpufeatures v0.2.1 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Checking data-encoding v2.3.2 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking generic-array v0.14.4 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking sha2 v0.9.8 [INFO] [stderr] Checking mcfrs1 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `HashSet` [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:1:34 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `HashSet` [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:1:34 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split` [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split` [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `burn` is never used [INFO] [stdout] --> src/mcfrs/compiler/scope_burner.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator> { [INFO] [stdout] | -------------- method in this trait [INFO] [stdout] 6 | fn burn(self) -> Result<(), std::io::Error>; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `burn` is never used [INFO] [stdout] --> src/mcfrs/compiler/scope_burner.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator> { [INFO] [stdout] | -------------- method in this trait [INFO] [stdout] 6 | fn burn(self) -> Result<(), std::io::Error>; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `namespace` is never read [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct MacroDefinition<'a> { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 9 | namespace: &'a Namespace<'a>, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_reference_id` is never used [INFO] [stdout] --> src/mcfrs/scope.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 16 | impl<'a> Scope<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn set_reference_id(&mut self, id: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `namespace` is never read [INFO] [stdout] --> src/mcfrs/compiler/macro_compiler.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct MacroDefinition<'a> { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 9 | namespace: &'a Namespace<'a>, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_reference_id` is never used [INFO] [stdout] --> src/mcfrs/scope.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 16 | impl<'a> Scope<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn set_reference_id(&mut self, id: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.44s [INFO] running `Command { std: "docker" "inspect" "8d0f580a106914aa786129334ce7463f0f2835cb7cbf9789849c2663a2e9f027", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8d0f580a106914aa786129334ce7463f0f2835cb7cbf9789849c2663a2e9f027", kill_on_drop: false }` [INFO] [stdout] 8d0f580a106914aa786129334ce7463f0f2835cb7cbf9789849c2663a2e9f027 [INFO] checking Lukasz825700516/mcfrs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Lukasz825700516/mcfrs 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/Lukasz825700516/mcfrs [INFO] finished tweaking git repo https://github.com/Lukasz825700516/mcfrs [INFO] tweaked toml for git repo https://github.com/Lukasz825700516/mcfrs written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Lukasz825700516/mcfrs 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a1e7ed264dcde64fdd27a0b4039358a89e7a61550d946a99f9ccd5c542b57fe6 [INFO] running `Command { std: "docker" "start" "-a" "a1e7ed264dcde64fdd27a0b4039358a89e7a61550d946a99f9ccd5c542b57fe6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a1e7ed264dcde64fdd27a0b4039358a89e7a61550d946a99f9ccd5c542b57fe6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1e7ed264dcde64fdd27a0b4039358a89e7a61550d946a99f9ccd5c542b57fe6", kill_on_drop: false }` [INFO] [stdout] a1e7ed264dcde64fdd27a0b4039358a89e7a61550d946a99f9ccd5c542b57fe6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 72a9d9c34431a3e8ec47cfdf02e6b4bc3375981a905f02d0432720dfd6e6cbef [INFO] running `Command { std: "docker" "start" "-a" "72a9d9c34431a3e8ec47cfdf02e6b4bc3375981a905f02d0432720dfd6e6cbef", kill_on_drop: false }` [INFO] [stderr] Compiling typenum v1.14.0 [INFO] [stderr] Checking cpufeatures v0.2.1 [INFO] [stderr] Checking data-encoding v2.3.2 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.5.4/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] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "72a9d9c34431a3e8ec47cfdf02e6b4bc3375981a905f02d0432720dfd6e6cbef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72a9d9c34431a3e8ec47cfdf02e6b4bc3375981a905f02d0432720dfd6e6cbef", kill_on_drop: false }` [INFO] [stdout] 72a9d9c34431a3e8ec47cfdf02e6b4bc3375981a905f02d0432720dfd6e6cbef