[INFO] cloning repository https://github.com/gky360/mycc [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gky360/mycc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgky360%2Fmycc", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgky360%2Fmycc'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3fe20c40e9be473578d1a6a5ba14bc460af2cf2a [INFO] checking gky360/mycc against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgky360%2Fmycc" "/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/gky360/mycc 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/gky360/mycc [INFO] finished tweaking git repo https://github.com/gky360/mycc [INFO] tweaked toml for git repo https://github.com/gky360/mycc written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/gky360/mycc 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] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded strum v0.15.0 [INFO] [stderr] Downloaded wincolor v1.0.1 [INFO] [stderr] Downloaded failure_derive v0.1.5 [INFO] [stderr] Downloaded failure v0.1.5 [INFO] [stderr] Downloaded remove_dir_all v0.5.1 [INFO] [stderr] Downloaded unicode-segmentation v1.3.0 [INFO] [stderr] Downloaded quick-error v1.2.2 [INFO] [stderr] Downloaded humantime v1.2.0 [INFO] [stderr] Downloaded env_logger v0.6.1 [INFO] [stderr] Downloaded cc v1.0.37 [INFO] [stderr] Downloaded rustc-demangle v0.1.14 [INFO] [stderr] Downloaded libc v0.2.55 [INFO] [stderr] Downloaded backtrace v0.3.26 [INFO] [stderr] Downloaded structopt v0.2.15 [INFO] [stderr] Downloaded termcolor v1.0.4 [INFO] [stderr] Downloaded synstructure v0.10.2 [INFO] [stderr] Downloaded structopt-derive v0.2.15 [INFO] [stderr] Downloaded strum_macros v0.15.0 [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] 0f4d6e5dfffa72e07f2ba6894272dc4ae2ec2af40f3e1c47a174d24e1809a284 [INFO] running `Command { std: "docker" "start" "-a" "0f4d6e5dfffa72e07f2ba6894272dc4ae2ec2af40f3e1c47a174d24e1809a284", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0f4d6e5dfffa72e07f2ba6894272dc4ae2ec2af40f3e1c47a174d24e1809a284", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0f4d6e5dfffa72e07f2ba6894272dc4ae2ec2af40f3e1c47a174d24e1809a284", kill_on_drop: false }` [INFO] [stdout] 0f4d6e5dfffa72e07f2ba6894272dc4ae2ec2af40f3e1c47a174d24e1809a284 [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] 1c39be706fb7bd64319bfefd1acdc5ececf752ccfa7ebad8a6dbcc2a036f6986 [INFO] running `Command { std: "docker" "start" "-a" "1c39be706fb7bd64319bfefd1acdc5ececf752ccfa7ebad8a6dbcc2a036f6986", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.55 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking regex-syntax v0.6.6 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking rustc-demangle v0.1.14 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking termcolor v1.0.4 [INFO] [stderr] Checking strum v0.15.0 [INFO] [stderr] Checking remove_dir_all v0.5.1 [INFO] [stderr] Compiling backtrace v0.3.26 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking tempdir v0.3.7 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Checking env_logger v0.6.1 [INFO] [stderr] Compiling structopt-derive v0.2.15 [INFO] [stderr] Compiling strum_macros v0.15.0 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking structopt v0.2.15 [INFO] [stderr] Checking mycc v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `FnMut` is imported redundantly [INFO] [stdout] --> src/lexer/mod.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ops::FnMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `FnMut` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/tests.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 5 | use super::*; [INFO] [stdout] | -------- the item `fs` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `PathBuf` is imported redundantly [INFO] [stdout] --> src/tests.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::path::PathBuf; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 5 | use super::*; [INFO] [stdout] | -------- the item `PathBuf` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `FnMut` is imported redundantly [INFO] [stdout] --> src/lexer/mod.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ops::FnMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `FnMut` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `analyze` is imported redundantly [INFO] [stdout] --> src/sema/tests.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 1 | use super::*; [INFO] [stdout] | -------- the item `analyze` is already imported here [INFO] [stdout] ... [INFO] [stdout] 4 | use crate::sema::analyze; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `env_logger` is imported redundantly [INFO] [stdout] --> tests/helpers/mod.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use env_logger; [INFO] [stdout] | ^^^^^^^^^^ the item `env_logger` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.00s [INFO] running `Command { std: "docker" "inspect" "1c39be706fb7bd64319bfefd1acdc5ececf752ccfa7ebad8a6dbcc2a036f6986", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c39be706fb7bd64319bfefd1acdc5ececf752ccfa7ebad8a6dbcc2a036f6986", kill_on_drop: false }` [INFO] [stdout] 1c39be706fb7bd64319bfefd1acdc5ececf752ccfa7ebad8a6dbcc2a036f6986 [INFO] checking gky360/mycc against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgky360%2Fmycc" "/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/gky360/mycc 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/gky360/mycc [INFO] finished tweaking git repo https://github.com/gky360/mycc [INFO] tweaked toml for git repo https://github.com/gky360/mycc written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/gky360/mycc 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-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] d46454be134286ec920bbc58460c5841e66505a5b3bab069af582d6c5b49a886 [INFO] running `Command { std: "docker" "start" "-a" "d46454be134286ec920bbc58460c5841e66505a5b3bab069af582d6c5b49a886", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d46454be134286ec920bbc58460c5841e66505a5b3bab069af582d6c5b49a886", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d46454be134286ec920bbc58460c5841e66505a5b3bab069af582d6c5b49a886", kill_on_drop: false }` [INFO] [stdout] d46454be134286ec920bbc58460c5841e66505a5b3bab069af582d6c5b49a886 [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] d6ea68b6c1b3a7cd7a87a810285132f1461e8b669b909d09fab495e3c60cf5e0 [INFO] running `Command { std: "docker" "start" "-a" "d6ea68b6c1b3a7cd7a87a810285132f1461e8b669b909d09fab495e3c60cf5e0", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.55 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking rustc-demangle v0.1.14 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking regex-syntax v0.6.6 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking termcolor v1.0.4 [INFO] [stderr] Checking strum v0.15.0 [INFO] [stderr] Checking remove_dir_all v0.5.1 [INFO] [stderr] Compiling backtrace v0.3.26 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking tempdir v0.3.7 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.1.6/src/exec.rs:797:13 [INFO] [stdout] | [INFO] [stdout] 797 | / match dfa::Fsm::reverse( [INFO] [stdout] 798 | | &self.ro.dfa_reverse, [INFO] [stdout] 799 | | self.cache, [INFO] [stdout] 800 | | false, [INFO] [stdout] ... | [INFO] [stdout] 811 | | Quit => return Some(Quit), [INFO] [stdout] 812 | | }; [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" "d6ea68b6c1b3a7cd7a87a810285132f1461e8b669b909d09fab495e3c60cf5e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d6ea68b6c1b3a7cd7a87a810285132f1461e8b669b909d09fab495e3c60cf5e0", kill_on_drop: false }` [INFO] [stdout] d6ea68b6c1b3a7cd7a87a810285132f1461e8b669b909d09fab495e3c60cf5e0