[INFO] fetching crate process_hollowing 1.12.0...
[INFO] testing process_hollowing-1.12.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate process_hollowing 1.12.0 into /workspace/builds/worker-4-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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate process_hollowing 1.12.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "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] [stderr]   Downloaded syn v2.0.69
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537406a98daa7bbc13730f9cb8130a4b52bfba710e7acdb3e47bb34553a66abe
[INFO] running `Command { std: "docker" "start" "-a" "537406a98daa7bbc13730f9cb8130a4b52bfba710e7acdb3e47bb34553a66abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537406a98daa7bbc13730f9cb8130a4b52bfba710e7acdb3e47bb34553a66abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537406a98daa7bbc13730f9cb8130a4b52bfba710e7acdb3e47bb34553a66abe", kill_on_drop: false }`
[INFO] [stdout] 537406a98daa7bbc13730f9cb8130a4b52bfba710e7acdb3e47bb34553a66abe
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7341bc1ed3c949d52688f130556d3ebbea669c253c4022db27cb6e68bbd192be
[INFO] running `Command { std: "docker" "start" "-a" "7341bc1ed3c949d52688f130556d3ebbea669c253c4022db27cb6e68bbd192be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling rco_utils v1.3.0
[INFO] [stderr]    Compiling rco_config v0.3.0
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "7341bc1ed3c949d52688f130556d3ebbea669c253c4022db27cb6e68bbd192be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7341bc1ed3c949d52688f130556d3ebbea669c253c4022db27cb6e68bbd192be", kill_on_drop: false }`
[INFO] [stdout] 7341bc1ed3c949d52688f130556d3ebbea669c253c4022db27cb6e68bbd192be
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a36a28ed82cc0b886b0df899fc1f7964b569f8662b20384734179d786c0e5ce3
[INFO] running `Command { std: "docker" "start" "-a" "a36a28ed82cc0b886b0df899fc1f7964b569f8662b20384734179d786c0e5ce3", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "a36a28ed82cc0b886b0df899fc1f7964b569f8662b20384734179d786c0e5ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36a28ed82cc0b886b0df899fc1f7964b569f8662b20384734179d786c0e5ce3", kill_on_drop: false }`
[INFO] [stdout] a36a28ed82cc0b886b0df899fc1f7964b569f8662b20384734179d786c0e5ce3
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3a9c008d41361e07ddb3d8d006bb438deccec5854b24d27bfa8f6c8f3cebabdf
[INFO] running `Command { std: "docker" "start" "-a" "3a9c008d41361e07ddb3d8d006bb438deccec5854b24d27bfa8f6c8f3cebabdf", kill_on_drop: false }`
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/process_hollowing_linux.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |             if let Err(error) = execv(&executable, arguments) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `process_hollowing` (bin "process_hollowing" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/process_hollowing-dcda33eea8aeb62b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3a9c008d41361e07ddb3d8d006bb438deccec5854b24d27bfa8f6c8f3cebabdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a9c008d41361e07ddb3d8d006bb438deccec5854b24d27bfa8f6c8f3cebabdf", kill_on_drop: false }`
[INFO] [stdout] 3a9c008d41361e07ddb3d8d006bb438deccec5854b24d27bfa8f6c8f3cebabdf