[INFO] cloning repository https://github.com/DennisLent/rgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DennisLent/rgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDennisLent%2Frgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDennisLent%2Frgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ab73700769f674b1e1d7bbd89c6497e75f28f72
[INFO] checking DennisLent/rgrep against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDennisLent%2Frgrep" "/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/DennisLent/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/DennisLent/rgrep
[INFO] finished tweaking git repo https://github.com/DennisLent/rgrep
[INFO] tweaked toml for git repo https://github.com/DennisLent/rgrep written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DennisLent/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] 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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e34d9377e390db8298fdbdaa1c7490eb19cc35de12536d0f262481c0bbdd0038
[INFO] running `Command { std: "docker" "start" "-a" "e34d9377e390db8298fdbdaa1c7490eb19cc35de12536d0f262481c0bbdd0038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e34d9377e390db8298fdbdaa1c7490eb19cc35de12536d0f262481c0bbdd0038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e34d9377e390db8298fdbdaa1c7490eb19cc35de12536d0f262481c0bbdd0038", kill_on_drop: false }`
[INFO] [stdout] e34d9377e390db8298fdbdaa1c7490eb19cc35de12536d0f262481c0bbdd0038
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 819426e4970e3576e10e32b6c55d73257793835612e611dcbdb2d44e356c466d
[INFO] running `Command { std: "docker" "start" "-a" "819426e4970e3576e10e32b6c55d73257793835612e611dcbdb2d44e356c466d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking rgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `args` is never read
[INFO] [stdout]   --> src/result.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ResultDirectory<'a> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub args: &'a Args,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResultDirectory` 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: field `args` is never read
[INFO] [stdout]   --> src/result.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ResultDirectory<'a> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub args: &'a Args,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResultDirectory` 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: 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 2.06s
[INFO] running `Command { std: "docker" "inspect" "819426e4970e3576e10e32b6c55d73257793835612e611dcbdb2d44e356c466d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "819426e4970e3576e10e32b6c55d73257793835612e611dcbdb2d44e356c466d", kill_on_drop: false }`
[INFO] [stdout] 819426e4970e3576e10e32b6c55d73257793835612e611dcbdb2d44e356c466d
[INFO] checking DennisLent/rgrep against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDennisLent%2Frgrep" "/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/DennisLent/rgrep on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DennisLent/rgrep
[INFO] finished tweaking git repo https://github.com/DennisLent/rgrep
[INFO] tweaked toml for git repo https://github.com/DennisLent/rgrep written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/DennisLent/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d623c363e1e1d5beff5993debd804c3d4bada91a12b17aa12aeddf8b9214355a
[INFO] running `Command { std: "docker" "start" "-a" "d623c363e1e1d5beff5993debd804c3d4bada91a12b17aa12aeddf8b9214355a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d623c363e1e1d5beff5993debd804c3d4bada91a12b17aa12aeddf8b9214355a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d623c363e1e1d5beff5993debd804c3d4bada91a12b17aa12aeddf8b9214355a", kill_on_drop: false }`
[INFO] [stdout] d623c363e1e1d5beff5993debd804c3d4bada91a12b17aa12aeddf8b9214355a
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5249e281cc44545df686b9185ad06ec2965219c10d524e2f4373b084d03032ff
[INFO] running `Command { std: "docker" "start" "-a" "5249e281cc44545df686b9185ad06ec2965219c10d524e2f4373b084d03032ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking rgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `args` is never read
[INFO] [stdout]   --> src/result.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ResultDirectory<'a> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub args: &'a Args,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResultDirectory` 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: field `args` is never read
[INFO] [stdout]   --> src/result.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ResultDirectory<'a> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub args: &'a Args,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResultDirectory` 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: 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 3.01s
[INFO] running `Command { std: "docker" "inspect" "5249e281cc44545df686b9185ad06ec2965219c10d524e2f4373b084d03032ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5249e281cc44545df686b9185ad06ec2965219c10d524e2f4373b084d03032ff", kill_on_drop: false }`
[INFO] [stdout] 5249e281cc44545df686b9185ad06ec2965219c10d524e2f4373b084d03032ff