[INFO] cloning repository https://github.com/karol-202/kgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/karol-202/kgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarol-202%2Fkgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarol-202%2Fkgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9137775dab62b5fb97881eacd705ada9c51b6590
[INFO] checking karol-202/kgrep against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarol-202%2Fkgrep" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/karol-202/kgrep on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/karol-202/kgrep
[INFO] finished tweaking git repo https://github.com/karol-202/kgrep
[INFO] tweaked toml for git repo https://github.com/karol-202/kgrep written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/karol-202/kgrep 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c46c2e770b3248f42fdf0824b21e40f3081f0fe005a096e88afa7ebb7520b911
[INFO] running `Command { std: "docker" "start" "-a" "c46c2e770b3248f42fdf0824b21e40f3081f0fe005a096e88afa7ebb7520b911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c46c2e770b3248f42fdf0824b21e40f3081f0fe005a096e88afa7ebb7520b911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c46c2e770b3248f42fdf0824b21e40f3081f0fe005a096e88afa7ebb7520b911", kill_on_drop: false }`
[INFO] [stdout] c46c2e770b3248f42fdf0824b21e40f3081f0fe005a096e88afa7ebb7520b911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8c3dec06e07af1e87f72a7e82b1f5ac396abf7e73ea9fc9e41f4ea8fe3f0ed1
[INFO] running `Command { std: "docker" "start" "-a" "e8c3dec06e07af1e87f72a7e82b1f5ac396abf7e73ea9fc9e41f4ea8fe3f0ed1", kill_on_drop: false }`
[INFO] [stderr]     Checking kgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Args` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Error {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 7 |     Io(IoError),
[INFO] [stdout] 8 |     Args(ArgsErrorType),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `TooFew` and `TooMany` are never constructed
[INFO] [stdout]   --> src/error.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum ArgsErrorType {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 37 |     TooFew,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 38 |     TooMany,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgsErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Args` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Error {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 7 |     Io(IoError),
[INFO] [stdout] 8 |     Args(ArgsErrorType),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `TooFew` and `TooMany` are never constructed
[INFO] [stdout]   --> src/error.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum ArgsErrorType {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 37 |     TooFew,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 38 |     TooMany,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgsErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "e8c3dec06e07af1e87f72a7e82b1f5ac396abf7e73ea9fc9e41f4ea8fe3f0ed1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8c3dec06e07af1e87f72a7e82b1f5ac396abf7e73ea9fc9e41f4ea8fe3f0ed1", kill_on_drop: false }`
[INFO] [stdout] e8c3dec06e07af1e87f72a7e82b1f5ac396abf7e73ea9fc9e41f4ea8fe3f0ed1
[INFO] checking karol-202/kgrep against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarol-202%2Fkgrep" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/karol-202/kgrep on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/karol-202/kgrep
[INFO] finished tweaking git repo https://github.com/karol-202/kgrep
[INFO] tweaked toml for git repo https://github.com/karol-202/kgrep written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/karol-202/kgrep 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aec80346a5500b2d223b8ee5f2f6942e2018e446489bc7b570b1e4fe5657a797
[INFO] running `Command { std: "docker" "start" "-a" "aec80346a5500b2d223b8ee5f2f6942e2018e446489bc7b570b1e4fe5657a797", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aec80346a5500b2d223b8ee5f2f6942e2018e446489bc7b570b1e4fe5657a797", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec80346a5500b2d223b8ee5f2f6942e2018e446489bc7b570b1e4fe5657a797", kill_on_drop: false }`
[INFO] [stdout] aec80346a5500b2d223b8ee5f2f6942e2018e446489bc7b570b1e4fe5657a797
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b9ace036673ce0ba14c76ded2cb4441bbc0361211b7af7b3b7d3dbc5d15fcef
[INFO] running `Command { std: "docker" "start" "-a" "8b9ace036673ce0ba14c76ded2cb4441bbc0361211b7af7b3b7d3dbc5d15fcef", kill_on_drop: false }`
[INFO] [stderr]     Checking kgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Args` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Error {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 7 |     Io(IoError),
[INFO] [stdout] 8 |     Args(ArgsErrorType),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `TooFew` and `TooMany` are never constructed
[INFO] [stdout]   --> src/error.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum ArgsErrorType {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 37 |     TooFew,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 38 |     TooMany,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgsErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Args` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Error {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 7 |     Io(IoError),
[INFO] [stdout] 8 |     Args(ArgsErrorType),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `TooFew` and `TooMany` are never constructed
[INFO] [stdout]   --> src/error.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum ArgsErrorType {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 37 |     TooFew,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 38 |     TooMany,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgsErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "8b9ace036673ce0ba14c76ded2cb4441bbc0361211b7af7b3b7d3dbc5d15fcef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b9ace036673ce0ba14c76ded2cb4441bbc0361211b7af7b3b7d3dbc5d15fcef", kill_on_drop: false }`
[INFO] [stdout] 8b9ace036673ce0ba14c76ded2cb4441bbc0361211b7af7b3b7d3dbc5d15fcef