[INFO] cloning repository https://github.com/Vonr/rust_grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vonr/rust_grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVonr%2Frust_grep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVonr%2Frust_grep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e56f0f26946e80dc637e7a8e8e40b89553ffec1
[INFO] checking Vonr/rust_grep against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVonr%2Frust_grep" "/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/Vonr/rust_grep 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] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Vonr/rust_grep
[INFO] finished tweaking git repo https://github.com/Vonr/rust_grep
[INFO] tweaked toml for git repo https://github.com/Vonr/rust_grep written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Vonr/rust_grep 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] cec7233652c88ab1e58a992dffc98a46279b8b66ffb71fd0cd99e885216af515
[INFO] running `Command { std: "docker" "start" "-a" "cec7233652c88ab1e58a992dffc98a46279b8b66ffb71fd0cd99e885216af515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec7233652c88ab1e58a992dffc98a46279b8b66ffb71fd0cd99e885216af515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec7233652c88ab1e58a992dffc98a46279b8b66ffb71fd0cd99e885216af515", kill_on_drop: false }`
[INFO] [stdout] cec7233652c88ab1e58a992dffc98a46279b8b66ffb71fd0cd99e885216af515
[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] 0f5b1386ddd409113d886566ad47a357ac4c134a121bb5fbd48d42a6976ed1a1
[INFO] running `Command { std: "docker" "start" "-a" "0f5b1386ddd409113d886566ad47a357ac4c134a121bb5fbd48d42a6976ed1a1", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]     Checking regex-automata v0.3.3
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking bstr v1.6.0
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]    Compiling grepox v0.2.22 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Bitflag` is never used
[INFO] [stdout]   --> src/trait_ext.rs:61:11
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub trait Bitflag {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Bitflag` is never used
[INFO] [stdout]   --> src/trait_ext.rs:61:11
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub trait Bitflag {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "0f5b1386ddd409113d886566ad47a357ac4c134a121bb5fbd48d42a6976ed1a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5b1386ddd409113d886566ad47a357ac4c134a121bb5fbd48d42a6976ed1a1", kill_on_drop: false }`
[INFO] [stdout] 0f5b1386ddd409113d886566ad47a357ac4c134a121bb5fbd48d42a6976ed1a1
[INFO] checking Vonr/rust_grep against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVonr%2Frust_grep" "/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/Vonr/rust_grep 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] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Vonr/rust_grep
[INFO] finished tweaking git repo https://github.com/Vonr/rust_grep
[INFO] tweaked toml for git repo https://github.com/Vonr/rust_grep written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Vonr/rust_grep 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] 7afe0db759942bb6f605e13f689c86044dc81cbf4ed4540a5253109d77ee3afd
[INFO] running `Command { std: "docker" "start" "-a" "7afe0db759942bb6f605e13f689c86044dc81cbf4ed4540a5253109d77ee3afd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7afe0db759942bb6f605e13f689c86044dc81cbf4ed4540a5253109d77ee3afd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7afe0db759942bb6f605e13f689c86044dc81cbf4ed4540a5253109d77ee3afd", kill_on_drop: false }`
[INFO] [stdout] 7afe0db759942bb6f605e13f689c86044dc81cbf4ed4540a5253109d77ee3afd
[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] 3d3c517413ab964d4fdd9e724d336faaa300e7f0c734a738519951039a703add
[INFO] running `Command { std: "docker" "start" "-a" "3d3c517413ab964d4fdd9e724d336faaa300e7f0c734a738519951039a703add", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex-automata v0.3.3
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]     Checking bstr v1.6.0
[INFO] [stderr]    Compiling grepox v0.2.22 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |       () => {{
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 22 | |         println!(
[INFO] [stdout] 23 | |             r"Usage: grepox [OPTION]... QUERY [FILES]...
[INFO] [stdout] 24 | | Search for QUERY in FILES.
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |         ::std::process::exit(1)
[INFO] [stdout] 45 | |     }};
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/config.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |               ConfigState::Invalid => error!("Invalid state"),
[INFO] [stdout]    |                                       ----------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::print_help` which comes from the expansion of the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |       () => {{
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 22 | |         println!(
[INFO] [stdout] 23 | |             r"Usage: grepox [OPTION]... QUERY [FILES]...
[INFO] [stdout] 24 | | Search for QUERY in FILES.
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |         ::std::process::exit(1)
[INFO] [stdout] 45 | |     }};
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/config.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |               ConfigState::Invalid => error!("Invalid state"),
[INFO] [stdout]    |                                       ----------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::print_help` which comes from the expansion of the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [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 `grepox` (bin "grepox" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `grepox` (bin "grepox") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3d3c517413ab964d4fdd9e724d336faaa300e7f0c734a738519951039a703add", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d3c517413ab964d4fdd9e724d336faaa300e7f0c734a738519951039a703add", kill_on_drop: false }`
[INFO] [stdout] 3d3c517413ab964d4fdd9e724d336faaa300e7f0c734a738519951039a703add