[INFO] cloning repository https://github.com/KCreate/pngencoder-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KCreate/pngencoder-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKCreate%2Fpngencoder-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKCreate%2Fpngencoder-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 083570fc3388b0e71a3bcb49240ef7873378bfd9
[INFO] testing KCreate/pngencoder-rust against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKCreate%2Fpngencoder-rust" "/workspace/builds/worker-117/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KCreate/pngencoder-rust on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KCreate/pngencoder-rust
[INFO] finished tweaking git repo https://github.com/KCreate/pngencoder-rust
[INFO] tweaked toml for git repo https://github.com/KCreate/pngencoder-rust written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] crate git repo https://github.com/KCreate/pngencoder-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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 num-rational v0.1.32
[INFO] [stderr]   Downloaded flate2 v0.2.14
[INFO] [stderr]   Downloaded num-bigint v0.1.32
[INFO] [stderr]   Downloaded miniz-sys v0.1.7
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.4
[INFO] [stderr]   Downloaded deque v0.3.1
[INFO] [stderr]   Downloaded num v0.1.32
[INFO] [stderr]   Downloaded color_quant v1.0.0
[INFO] [stderr]   Downloaded gif v0.8.0
[INFO] [stderr]   Downloaded inflate v0.1.1
[INFO] [stderr]   Downloaded libc v0.2.12
[INFO] [stderr]   Downloaded rayon v0.3.1
[INFO] [stderr]   Downloaded euclid v0.6.6
[INFO] [stderr]   Downloaded num-traits v0.1.32
[INFO] [stderr]   Downloaded num_cpus v0.2.12
[INFO] [stderr]   Downloaded png v0.5.1
[INFO] [stderr]   Downloaded image v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43baae3a127228fe44a7d45718c1f2291b5da46e1c2b27295826b8e31a7fafb5
[INFO] running `Command { std: "docker" "start" "-a" "43baae3a127228fe44a7d45718c1f2291b5da46e1c2b27295826b8e31a7fafb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43baae3a127228fe44a7d45718c1f2291b5da46e1c2b27295826b8e31a7fafb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43baae3a127228fe44a7d45718c1f2291b5da46e1c2b27295826b8e31a7fafb5", kill_on_drop: false }`
[INFO] [stdout] 43baae3a127228fe44a7d45718c1f2291b5da46e1c2b27295826b8e31a7fafb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cdbddde709b0397e8f4168feb40384f666980a3df17e6bd9e473896eeb55b3d
[INFO] running `Command { std: "docker" "start" "-a" "9cdbddde709b0397e8f4168feb40384f666980a3df17e6bd9e473896eeb55b3d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.12
[INFO] [stderr]    Compiling num-traits v0.1.32
[INFO] [stderr]    Compiling gcc v0.3.28
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling color_quant v1.0.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stdout]     |
[INFO] [stdout] 147 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gif v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling num_cpus v0.2.12
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling num v0.1.32
[INFO] [stderr]    Compiling enum_primitive v0.1.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9cdbddde709b0397e8f4168feb40384f666980a3df17e6bd9e473896eeb55b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cdbddde709b0397e8f4168feb40384f666980a3df17e6bd9e473896eeb55b3d", kill_on_drop: false }`
[INFO] [stdout] 9cdbddde709b0397e8f4168feb40384f666980a3df17e6bd9e473896eeb55b3d