[INFO] fetching crate process_hollowing 1.12.0...
[INFO] checking process_hollowing-1.12.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate process_hollowing 1.12.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate process_hollowing 1.12.0
[INFO] finished tweaking crates.io crate process_hollowing 1.12.0
[INFO] tweaked toml for crates.io crate process_hollowing 1.12.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate process_hollowing 1.12.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate process_hollowing 1.12.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rco_config v0.3.0
[INFO] [stderr]   Downloaded rco_utils v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd1126b03653fb204d93750b09ba16ef18887afef496efb0687e5ae4cae0145c
[INFO] running `Command { std: "docker" "start" "-a" "cd1126b03653fb204d93750b09ba16ef18887afef496efb0687e5ae4cae0145c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd1126b03653fb204d93750b09ba16ef18887afef496efb0687e5ae4cae0145c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd1126b03653fb204d93750b09ba16ef18887afef496efb0687e5ae4cae0145c", kill_on_drop: false }`
[INFO] [stdout] cd1126b03653fb204d93750b09ba16ef18887afef496efb0687e5ae4cae0145c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d4dd89d071ff8718e8b29b151603e11152b2d3be5a09c413860b88437d91256
[INFO] running `Command { std: "docker" "start" "-a" "0d4dd89d071ff8718e8b29b151603e11152b2d3be5a09c413860b88437d91256", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]     Checking rco_utils v1.3.0
[INFO] [stderr]     Checking rco_config v0.3.0
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking process_hollowing v1.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/process_hollowing_linux.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |             if let Err(error) = execv(&executable, arguments) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/process_hollowing_linux.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |             if let Err(error) = execv(&executable, arguments) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "0d4dd89d071ff8718e8b29b151603e11152b2d3be5a09c413860b88437d91256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d4dd89d071ff8718e8b29b151603e11152b2d3be5a09c413860b88437d91256", kill_on_drop: false }`
[INFO] [stdout] 0d4dd89d071ff8718e8b29b151603e11152b2d3be5a09c413860b88437d91256