[INFO] cloning repository https://github.com/edwin0cheng/omega-tile
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edwin0cheng/omega-tile" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9290850a725e4fb1ff27ace8ec736a82ffef1eb3
[INFO] checking edwin0cheng/omega-tile against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwin0cheng/omega-tile on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] finished tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] tweaked toml for git repo https://github.com/edwin0cheng/omega-tile written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/edwin0cheng/omega-tile 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/edwin0cheng/direct2d-rs`
[INFO] [stderr]     Updating git repository `https://github.com/edwin0cheng/druid`
[INFO] [stderr]     Updating git repository `https://github.com/EmbarkStudios/texture-synthesis`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking edwin0cheng/omega-tile against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwin0cheng/omega-tile on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] finished tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] tweaked toml for git repo https://github.com/edwin0cheng/omega-tile written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/edwin0cheng/omega-tile 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "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 edwin0cheng/omega-tile against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwin0cheng/omega-tile on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] finished tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] tweaked toml for git repo https://github.com/edwin0cheng/omega-tile written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/edwin0cheng/omega-tile 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "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 edwin0cheng/omega-tile against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwin0cheng/omega-tile on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] finished tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] tweaked toml for git repo https://github.com/edwin0cheng/omega-tile written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/edwin0cheng/omega-tile 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "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 edwin0cheng/omega-tile against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwin0cheng%2Fomega-tile" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwin0cheng/omega-tile on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] finished tweaking git repo https://github.com/edwin0cheng/omega-tile
[INFO] tweaked toml for git repo https://github.com/edwin0cheng/omega-tile written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/edwin0cheng/omega-tile 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "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 unic-langid v0.7.1
[INFO] [stderr]   Downloaded rstar v0.5.1
[INFO] [stderr]   Downloaded fluent-bundle v0.9.1
[INFO] [stderr]   Downloaded intl_pluralrules v5.0.2
[INFO] [stderr]   Downloaded piet-web v0.0.7
[INFO] [stderr]   Downloaded simple_logger v1.4.0
[INFO] [stderr]   Downloaded piet-cairo v0.0.7
[INFO] [stderr]   Downloaded fluent-langneg v0.11.1
[INFO] [stderr]   Downloaded kurbo v0.5.6
[INFO] [stderr]   Downloaded piet-direct2d v0.0.7
[INFO] [stderr]   Downloaded glib v0.8.2
[INFO] [stderr]   Downloaded piet v0.0.7
[INFO] [stderr]   Downloaded piet-common v0.0.7
[INFO] [stderr]   Downloaded fluent-syntax v0.9.1
[INFO] [stderr]   Downloaded unic-langid-impl v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bebcc868de5970f9e08801c7efcdf6e239937cd7cb095072c525316973092a9
[INFO] running `Command { std: "docker" "start" "-a" "8bebcc868de5970f9e08801c7efcdf6e239937cd7cb095072c525316973092a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bebcc868de5970f9e08801c7efcdf6e239937cd7cb095072c525316973092a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bebcc868de5970f9e08801c7efcdf6e239937cd7cb095072c525316973092a9", kill_on_drop: false }`
[INFO] [stdout] 8bebcc868de5970f9e08801c7efcdf6e239937cd7cb095072c525316973092a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 200ec2b434d8b6f6677391c38e618ed312ec0006beb7968f7353c8b852235960
[INFO] running `Command { std: "docker" "start" "-a" "200ec2b434d8b6f6677391c38e618ed312ec0006beb7968f7353c8b852235960", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling glib-sys v0.9.1
[INFO] [stderr]    Compiling gobject-sys v0.9.1
[INFO] [stderr]    Compiling gio-sys v0.9.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.9.2
[INFO] [stderr]    Compiling pango-sys v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.9.1
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling atk-sys v0.9.1
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/44f3504e96c944ae54fc72b5f5008f53f7eda001/library/alloc/src/borrow.rs:179:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling gdk-sys v0.9.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling cairo-rs v0.7.1
[INFO] [stderr]     Checking png v0.15.2
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling gio v0.7.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling gtk-sys v0.9.2
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking glib v0.8.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]    Compiling pango v0.7.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking pdqselect v0.1.0
[INFO] [stderr]     Checking tinystr v0.3.2
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking unic-langid-impl v0.7.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking kurbo v0.5.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking rstar v0.5.1
[INFO] [stderr]    Compiling gdk v0.11.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling atk v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking unic-langid v0.7.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling gtk v0.7.0
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking piet v0.0.7
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr]     Checking intl_pluralrules v5.0.2
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "200ec2b434d8b6f6677391c38e618ed312ec0006beb7968f7353c8b852235960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "200ec2b434d8b6f6677391c38e618ed312ec0006beb7968f7353c8b852235960", kill_on_drop: false }`
[INFO] [stdout] 200ec2b434d8b6f6677391c38e618ed312ec0006beb7968f7353c8b852235960