[INFO] cloning repository https://github.com/wolf-hash/Snakes-in-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wolf-hash/Snakes-in-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolf-hash%2FSnakes-in-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolf-hash%2FSnakes-in-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d17061d257f36729e5822504c0cc917260c09618
[INFO] checking wolf-hash/Snakes-in-Rust against try#1b0139f5bdae7328e6d232947a8112333bb44eeb for pr-93394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolf-hash%2FSnakes-in-Rust" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wolf-hash/Snakes-in-Rust on toolchain 1b0139f5bdae7328e6d232947a8112333bb44eeb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wolf-hash/Snakes-in-Rust
[INFO] finished tweaking git repo https://github.com/wolf-hash/Snakes-in-Rust
[INFO] tweaked toml for git repo https://github.com/wolf-hash/Snakes-in-Rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/wolf-hash/Snakes-in-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded piston-gfx_texture v0.41.0
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.73.0
[INFO] [stderr]   Downloaded piston_window v0.120.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e657a8dd5ac62bf1380ae29c63983db1320fa638586fc749fbd3adcd7b20e6d
[INFO] running `Command { std: "docker" "start" "-a" "8e657a8dd5ac62bf1380ae29c63983db1320fa638586fc749fbd3adcd7b20e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e657a8dd5ac62bf1380ae29c63983db1320fa638586fc749fbd3adcd7b20e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e657a8dd5ac62bf1380ae29c63983db1320fa638586fc749fbd3adcd7b20e6d", kill_on_drop: false }`
[INFO] [stdout] 8e657a8dd5ac62bf1380ae29c63983db1320fa638586fc749fbd3adcd7b20e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24ee8706648445add304094f4bfa7e494c73bcc223df500f4b6f712d1a45d4a1
[INFO] running `Command { std: "docker" "start" "-a" "24ee8706648445add304094f4bfa7e494c73bcc223df500f4b6f712d1a45d4a1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking piston-graphics_api_version v1.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking interpolation v0.2.0
[INFO] [stderr]     Checking spin_sleep v1.0.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking shader_version v0.7.0
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.20.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=6ed3694332b7395d -C extra-filename=-6ed3694332b7395d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-c30f35abb0b74f97.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-88879d2dc0fa106c.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-6005b5664fe57091.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "24ee8706648445add304094f4bfa7e494c73bcc223df500f4b6f712d1a45d4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24ee8706648445add304094f4bfa7e494c73bcc223df500f4b6f712d1a45d4a1", kill_on_drop: false }`
[INFO] [stdout] 24ee8706648445add304094f4bfa7e494c73bcc223df500f4b6f712d1a45d4a1