[INFO] cloning repository https://github.com/codebje/rustmtest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codebje/rustmtest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebje%2Frustmtest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebje%2Frustmtest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57ff43c1fce32d12e3ecb092618ab194acb47ea0
[INFO] checking codebje/rustmtest against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebje%2Frustmtest" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codebje/rustmtest 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/codebje/rustmtest
[INFO] finished tweaking git repo https://github.com/codebje/rustmtest
[INFO] tweaked toml for git repo https://github.com/codebje/rustmtest written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/codebje/rustmtest 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 goblin v0.2.0
[INFO] [stderr]   Downloaded unicorn v0.9.1
[INFO] [stderr]   Downloaded libunicorn-sys v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6268430f0b5d20150d62aa2ad0686b2848e8075029e5923595bc58e63dcea905
[INFO] running `Command { std: "docker" "start" "-a" "6268430f0b5d20150d62aa2ad0686b2848e8075029e5923595bc58e63dcea905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6268430f0b5d20150d62aa2ad0686b2848e8075029e5923595bc58e63dcea905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6268430f0b5d20150d62aa2ad0686b2848e8075029e5923595bc58e63dcea905", kill_on_drop: false }`
[INFO] [stdout] 6268430f0b5d20150d62aa2ad0686b2848e8075029e5923595bc58e63dcea905
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c6f32380cdaa18461e7adadbac02c938e31b89e577aa7c8ac797b896a4a38a6c
[INFO] running `Command { std: "docker" "start" "-a" "c6f32380cdaa18461e7adadbac02c938e31b89e577aa7c8ac797b896a4a38a6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling build-helper v0.1.1
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling os_type v2.2.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling libunicorn-sys v0.9.1
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]     Checking unicorn v0.9.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking goblin v0.2.0
[INFO] [stderr]     Checking rustmtest v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `assert_ok`
[INFO] [stdout]    --> src/lex/mod.rs:194:14
[INFO] [stdout]     |
[INFO] [stdout] 194 | macro_rules! assert_ok {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `assert_err`
[INFO] [stdout]    --> src/lex/mod.rs:207:14
[INFO] [stdout]     |
[INFO] [stdout] 207 | macro_rules! assert_err {
[INFO] [stdout]     |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `assert_json`
[INFO] [stdout]    --> src/lex/mod.rs:214:14
[INFO] [stdout]     |
[INFO] [stdout] 214 | macro_rules! assert_json {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `lex_with` is never used
[INFO] [stdout]   --> src/lex/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub trait LexWith<'i, E>: Sized {
[INFO] [stdout]    |           ------- associated function in this trait
[INFO] [stdout] 32 |     fn lex_with(input: &'i str, extra: E) -> LexResult<'i, Self>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `lex_with` is never used
[INFO] [stdout]   --> src/lex/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub trait LexWith<'i, E>: Sized {
[INFO] [stdout]    |           ------- associated function in this trait
[INFO] [stdout] 32 |     fn lex_with(input: &'i str, extra: E) -> LexResult<'i, Self>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.57s
[INFO] running `Command { std: "docker" "inspect" "c6f32380cdaa18461e7adadbac02c938e31b89e577aa7c8ac797b896a4a38a6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f32380cdaa18461e7adadbac02c938e31b89e577aa7c8ac797b896a4a38a6c", kill_on_drop: false }`
[INFO] [stdout] c6f32380cdaa18461e7adadbac02c938e31b89e577aa7c8ac797b896a4a38a6c
[INFO] checking codebje/rustmtest against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebje%2Frustmtest" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codebje/rustmtest 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/codebje/rustmtest
[INFO] finished tweaking git repo https://github.com/codebje/rustmtest
[INFO] tweaked toml for git repo https://github.com/codebje/rustmtest written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/codebje/rustmtest 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 63ffdc19876a3fa1e2830a19d9daf3323815c2273fa1634a8c62121bc454294d
[INFO] running `Command { std: "docker" "start" "-a" "63ffdc19876a3fa1e2830a19d9daf3323815c2273fa1634a8c62121bc454294d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63ffdc19876a3fa1e2830a19d9daf3323815c2273fa1634a8c62121bc454294d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ffdc19876a3fa1e2830a19d9daf3323815c2273fa1634a8c62121bc454294d", kill_on_drop: false }`
[INFO] [stdout] 63ffdc19876a3fa1e2830a19d9daf3323815c2273fa1634a8c62121bc454294d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8473646226fd76eb2e8026e74c649ff93911c2f3a4f2dd4678e9358344ef7c06
[INFO] running `Command { std: "docker" "start" "-a" "8473646226fd76eb2e8026e74c649ff93911c2f3a4f2dd4678e9358344ef7c06", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling build-helper v0.1.1
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.4/src/exec.rs:836:13
[INFO] [stdout]     |
[INFO] [stdout] 836 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 837 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 838 | |                 self.cache.value(),
[INFO] [stdout] 839 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 850 | |                 Quit => return Some(Quit),
[INFO] [stdout] 851 | |             };
[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" "8473646226fd76eb2e8026e74c649ff93911c2f3a4f2dd4678e9358344ef7c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8473646226fd76eb2e8026e74c649ff93911c2f3a4f2dd4678e9358344ef7c06", kill_on_drop: false }`
[INFO] [stdout] 8473646226fd76eb2e8026e74c649ff93911c2f3a4f2dd4678e9358344ef7c06