[INFO] cloning repository https://github.com/avraam829/treempi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avraam829/treempi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favraam829%2Ftreempi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favraam829%2Ftreempi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8def128c2090270df5e82ebf95db94f542c2b069
[INFO] building avraam829/treempi against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favraam829%2Ftreempi" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/avraam829/treempi
[INFO] finished tweaking git repo https://github.com/avraam829/treempi
[INFO] tweaked toml for git repo https://github.com/avraam829/treempi written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/avraam829/treempi on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/avraam829/treempi 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v4.4.2
[INFO] [stderr]   Downloaded libffi v3.2.0
[INFO] [stderr]   Downloaded shell-words v1.1.0
[INFO] [stderr]   Downloaded build-probe-mpi v0.1.4
[INFO] [stderr]   Downloaded gif v0.13.1
[INFO] [stderr]   Downloaded bytemuck v1.22.0
[INFO] [stderr]   Downloaded mpi v0.6.0
[INFO] [stderr]   Downloaded conv v0.3.3
[INFO] [stderr]   Downloaded mpi-sys v0.2.2
[INFO] [stderr]   Downloaded custom_derive v0.1.7
[INFO] [stderr]   Downloaded half v2.5.0
[INFO] [stderr]   Downloaded exr v1.73.0
[INFO] [stderr]   Downloaded libffi-sys v2.3.0
[INFO] [stderr]   Downloaded bindgen v0.69.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd7052285f66a3969f871f4cb824fb80c87931a99efc1b6dc1dcbf2666f8b66b
[INFO] running `Command { std: "docker" "start" "-a" "fd7052285f66a3969f871f4cb824fb80c87931a99efc1b6dc1dcbf2666f8b66b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd7052285f66a3969f871f4cb824fb80c87931a99efc1b6dc1dcbf2666f8b66b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7052285f66a3969f871f4cb824fb80c87931a99efc1b6dc1dcbf2666f8b66b", kill_on_drop: false }`
[INFO] [stdout] fd7052285f66a3969f871f4cb824fb80c87931a99efc1b6dc1dcbf2666f8b66b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6037f7f13d32f8c0e9e8e19fc36b38d5b1c807e6c097b1b720efbadb695086ac
[INFO] running `Command { std: "docker" "start" "-a" "6037f7f13d32f8c0e9e8e19fc36b38d5b1c807e6c097b1b720efbadb695086ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling prettyplease v0.2.31
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling cc v1.2.17
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling bindgen v0.69.5
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling build-probe-mpi v0.1.4
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling mpi v0.6.0
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling half v2.5.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling flate2 v1.1.1
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling exr v1.73.0
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling once_cell v1.21.1
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling libffi-sys v2.3.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling image v0.24.9
[INFO] [stderr]    Compiling mpi-sys v0.2.2
[INFO] [stderr]    Compiling libffi v3.2.0
[INFO] [stderr]    Compiling mandelbrot_mpi_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/bin/mandelbrot_seq.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_seq`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let start_seq = Instant::now();
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_seq`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_mpi`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let start_mpi = Instant::now();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_mpi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `global_y`
[INFO] [stdout]   --> src/bin/mandelbrot_mpi.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let global_y = start_row + local_y;
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_global_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 47.29s
[INFO] running `Command { std: "docker" "inspect" "6037f7f13d32f8c0e9e8e19fc36b38d5b1c807e6c097b1b720efbadb695086ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6037f7f13d32f8c0e9e8e19fc36b38d5b1c807e6c097b1b720efbadb695086ac", kill_on_drop: false }`
[INFO] [stdout] 6037f7f13d32f8c0e9e8e19fc36b38d5b1c807e6c097b1b720efbadb695086ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11c2b30601c38ab27e9bb97e8e45ae01022fbc912cf011a69cfcb946afeaaf00
[INFO] running `Command { std: "docker" "start" "-a" "11c2b30601c38ab27e9bb97e8e45ae01022fbc912cf011a69cfcb946afeaaf00", kill_on_drop: false }`
[INFO] [stderr]    Compiling mandelbrot_mpi_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `start_seq`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let start_seq = Instant::now();
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_seq`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_mpi`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let start_mpi = Instant::now();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_mpi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/bin/mandelbrot_seq.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `global_y`
[INFO] [stdout]   --> src/bin/mandelbrot_mpi.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let global_y = start_row + local_y;
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_global_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "11c2b30601c38ab27e9bb97e8e45ae01022fbc912cf011a69cfcb946afeaaf00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11c2b30601c38ab27e9bb97e8e45ae01022fbc912cf011a69cfcb946afeaaf00", kill_on_drop: false }`
[INFO] [stdout] 11c2b30601c38ab27e9bb97e8e45ae01022fbc912cf011a69cfcb946afeaaf00