[INFO] cloning repository https://github.com/bill-pace/assignment-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bill-pace/assignment-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 235633cdcb6918df09aa5bb676ae248ac2cd1189
[INFO] checking bill-pace/assignment-solver against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded local-ip-address v0.4.4
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[INFO] [stderr]   Downloaded windows_gen v0.18.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 614d967710126989b74776da1b8fffa0270bed64fc67e2025ad773b3bd33434f
[INFO] running `Command { std: "docker" "start" "-a" "614d967710126989b74776da1b8fffa0270bed64fc67e2025ad773b3bd33434f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "614d967710126989b74776da1b8fffa0270bed64fc67e2025ad773b3bd33434f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "614d967710126989b74776da1b8fffa0270bed64fc67e2025ad773b3bd33434f", kill_on_drop: false }`
[INFO] [stdout] 614d967710126989b74776da1b8fffa0270bed64fc67e2025ad773b3bd33434f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6bd6893bdfb87e8b1a51757954bb13aa112ebb260bd2c63295a4285b25049de
[INFO] running `Command { std: "docker" "start" "-a" "e6bd6893bdfb87e8b1a51757954bb13aa112ebb260bd2c63295a4285b25049de", kill_on_drop: false }`
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[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]    Compiling bytemuck_derive v1.1.0
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[INFO] [stderr]    Compiling foreign-types-macros v0.2.2
[INFO] [stderr]     Checking matches v0.1.9
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[INFO] [stderr]     Checking owned_ttf_parser v0.15.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.15.1
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[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.15.10
[INFO] [stderr]     Checking raw-window-handle v0.5.0
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[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking bytemuck v1.9.1
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[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking tiny-skia-path v0.7.0
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[INFO] [stderr]     Checking emath v0.19.0
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking epaint v0.19.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking tiny-skia v0.7.0
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]    Compiling gtk-sys v0.15.3
[INFO] [stderr]     Checking calloop v0.10.1
[INFO] [stderr]     Checking raw-window-handle v0.4.3
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.6
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.8
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking x11rb v0.9.0
[INFO] [stderr]     Checking egui v0.19.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking webbrowser v0.7.1
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking wayland-egl v0.29.4
[INFO] [stderr]     Checking glow v0.11.2
[INFO] [stderr]    Compiling rfd v0.10.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling local-ip-address v0.4.4
[INFO] [stderr]     Checking neli v0.5.3
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking egui_glow v0.19.0
[INFO] [stderr]     Checking arboard v2.1.1
[INFO] [stderr]     Checking sctk-adwaita v0.4.2
[INFO] [stderr]     Checking smithay-clipboard v0.6.6
[INFO] [stderr]     Checking winit v0.27.2
[INFO] [stderr]     Checking egui-winit v0.19.0
[INFO] [stderr]     Checking glutin v0.29.1
[INFO] [stderr]     Checking eframe v0.19.0
[INFO] [stderr]     Checking assignment-solver v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/data_structures.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let i = distances[2345];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> benches/data_structures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut distances = vec![f32::INFINITY; 5102];
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/data_structures.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let i = distances.get(&2345).unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cv`
[INFO] [stdout]   --> benches/data_structures.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let cv = v.borrow().clone();
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_cv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rv`
[INFO] [stdout]   --> benches/data_structures.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let rv = v.borrow();
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_rv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.98s
[INFO] running `Command { std: "docker" "inspect" "e6bd6893bdfb87e8b1a51757954bb13aa112ebb260bd2c63295a4285b25049de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bd6893bdfb87e8b1a51757954bb13aa112ebb260bd2c63295a4285b25049de", kill_on_drop: false }`
[INFO] [stdout] e6bd6893bdfb87e8b1a51757954bb13aa112ebb260bd2c63295a4285b25049de
[INFO] checking bill-pace/assignment-solver against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking bill-pace/assignment-solver against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking bill-pace/assignment-solver against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking bill-pace/assignment-solver against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking bill-pace/assignment-solver against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbill-pace%2Fassignment-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bill-pace/assignment-solver on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] finished tweaking git repo https://github.com/bill-pace/assignment-solver
[INFO] tweaked toml for git repo https://github.com/bill-pace/assignment-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bill-pace/assignment-solver 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.