[INFO] cloning repository https://github.com/dfontana/serv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dfontana/serv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfontana%2Fserv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfontana%2Fserv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42ed9275818f7812ad2be0b5aad314827a3a7370
[INFO] checking dfontana/serv against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfontana%2Fserv" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dfontana/serv on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dfontana/serv
[INFO] finished tweaking git repo https://github.com/dfontana/serv
[INFO] tweaked toml for git repo https://github.com/dfontana/serv written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/dfontana/serv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cfadf2a83d7d5b7cca3691c67537b2953678ef3a7c8e93da3656584b0669cc6
[INFO] running `Command { std: "docker" "start" "-a" "1cfadf2a83d7d5b7cca3691c67537b2953678ef3a7c8e93da3656584b0669cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cfadf2a83d7d5b7cca3691c67537b2953678ef3a7c8e93da3656584b0669cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cfadf2a83d7d5b7cca3691c67537b2953678ef3a7c8e93da3656584b0669cc6", kill_on_drop: false }`
[INFO] [stdout] 1cfadf2a83d7d5b7cca3691c67537b2953678ef3a7c8e93da3656584b0669cc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4cc5a375300df8fec463e38230dbaf0066c22082e7ed7d34474fc9d8a8779206
[INFO] running `Command { std: "docker" "start" "-a" "4cc5a375300df8fec463e38230dbaf0066c22082e7ed7d34474fc9d8a8779206", kill_on_drop: false }`
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[INFO] [stdout] warning: use of deprecated type alias `image::png::PNGEncoder`: Use `PngEncoder` instead
[INFO] [stdout]  --> web/lib/src/encode.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{png::PNGEncoder, ImageBuffer, ImageError, Pixel};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `image::png::PNGEncoder`: Use `PngEncoder` instead
[INFO] [stdout]   --> web/lib/src/encode.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let encoder = PNGEncoder::new(&mut out);
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `image::png::PNGEncoder`: Use `PngEncoder` instead
[INFO] [stdout]  --> web/lib/src/encode.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{png::PNGEncoder, ImageBuffer, ImageError, Pixel};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `image::png::PNGEncoder`: Use `PngEncoder` instead
[INFO] [stdout]   --> web/lib/src/encode.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let encoder = PNGEncoder::new(&mut out);
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Image`
[INFO] [stdout]  --> web/lib/src/block/block.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   Image,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> web/lib/src/block/block.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   Empty,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Image`
[INFO] [stdout]  --> web/lib/src/block/block.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   Image,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> web/lib/src/block/block.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   Empty,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.116/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=edc5b401ae021fc2 -C extra-filename=-edc5b401ae021fc2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1a6a39c3cd9b115f.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-504b9604c4b778d8.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-c5bba1d8db2906bd.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid --cfg underscore_consts` (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" "4cc5a375300df8fec463e38230dbaf0066c22082e7ed7d34474fc9d8a8779206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc5a375300df8fec463e38230dbaf0066c22082e7ed7d34474fc9d8a8779206", kill_on_drop: false }`
[INFO] [stdout] 4cc5a375300df8fec463e38230dbaf0066c22082e7ed7d34474fc9d8a8779206