[INFO] cloning repository https://github.com/Taki-Ta/rgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Taki-Ta/rgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaki-Ta%2Frgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaki-Ta%2Frgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd06856503cb7852c9fc992f21359b51d1381eb9
[INFO] checking Taki-Ta/rgrep against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaki-Ta%2Frgrep" "/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/Taki-Ta/rgrep on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Taki-Ta/rgrep
[INFO] finished tweaking git repo https://github.com/Taki-Ta/rgrep
[INFO] tweaked toml for git repo https://github.com/Taki-Ta/rgrep written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Taki-Ta/rgrep 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded onig v6.4.0
[INFO] [stderr]   Downloaded plist v1.6.0
[INFO] [stderr]   Downloaded time v0.3.32
[INFO] [stderr]   Downloaded onig_sys v69.8.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ceff70b638b1710a99c9cb0569b1b613dddc2f64d736080c1a75ac20d0ae396
[INFO] running `Command { std: "docker" "start" "-a" "7ceff70b638b1710a99c9cb0569b1b613dddc2f64d736080c1a75ac20d0ae396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ceff70b638b1710a99c9cb0569b1b613dddc2f64d736080c1a75ac20d0ae396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ceff70b638b1710a99c9cb0569b1b613dddc2f64d736080c1a75ac20d0ae396", kill_on_drop: false }`
[INFO] [stdout] 7ceff70b638b1710a99c9cb0569b1b613dddc2f64d736080c1a75ac20d0ae396
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 503e304de5cc5463342fc2be06a9e959c4d0b8cb88156e8419819837d534e715
[INFO] running `Command { std: "docker" "start" "-a" "503e304de5cc5463342fc2be06a9e959c4d0b8cb88156e8419819837d534e715", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking quick-xml v0.31.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking indexmap v2.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking time v0.3.32
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking plist v1.6.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking onig v6.4.0
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Checking rgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.23s
[INFO] running `Command { std: "docker" "inspect" "503e304de5cc5463342fc2be06a9e959c4d0b8cb88156e8419819837d534e715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "503e304de5cc5463342fc2be06a9e959c4d0b8cb88156e8419819837d534e715", kill_on_drop: false }`
[INFO] [stdout] 503e304de5cc5463342fc2be06a9e959c4d0b8cb88156e8419819837d534e715
[INFO] checking Taki-Ta/rgrep against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaki-Ta%2Frgrep" "/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/Taki-Ta/rgrep on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Taki-Ta/rgrep
[INFO] finished tweaking git repo https://github.com/Taki-Ta/rgrep
[INFO] tweaked toml for git repo https://github.com/Taki-Ta/rgrep written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Taki-Ta/rgrep 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45921183ce7861af4df4fb6626f4cd739f284011391a6010519a1b415b4a78cd
[INFO] running `Command { std: "docker" "start" "-a" "45921183ce7861af4df4fb6626f4cd739f284011391a6010519a1b415b4a78cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45921183ce7861af4df4fb6626f4cd739f284011391a6010519a1b415b4a78cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45921183ce7861af4df4fb6626f4cd739f284011391a6010519a1b415b4a78cd", kill_on_drop: false }`
[INFO] [stdout] 45921183ce7861af4df4fb6626f4cd739f284011391a6010519a1b415b4a78cd
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa7cb350002acfb25a0030db985b4661f92a7ffb4703ada2447c3c2cf92bd4d6
[INFO] running `Command { std: "docker" "start" "-a" "fa7cb350002acfb25a0030db985b4661f92a7ffb4703ada2447c3c2cf92bd4d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking quick-xml v0.31.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking time v0.3.32
[INFO] [stderr]     Checking indexmap v2.2.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking plist v1.6.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking onig v6.4.0
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Checking rgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.89s
[INFO] running `Command { std: "docker" "inspect" "fa7cb350002acfb25a0030db985b4661f92a7ffb4703ada2447c3c2cf92bd4d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7cb350002acfb25a0030db985b4661f92a7ffb4703ada2447c3c2cf92bd4d6", kill_on_drop: false }`
[INFO] [stdout] fa7cb350002acfb25a0030db985b4661f92a7ffb4703ada2447c3c2cf92bd4d6