[INFO] cloning repository https://github.com/Deepthought73/mandelbrot-viewer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Deepthought73/mandelbrot-viewer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepthought73%2Fmandelbrot-viewer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepthought73%2Fmandelbrot-viewer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a1cd9d3dc85e65cd2f8de14f80ca1d1f2b917dd
[INFO] checking Deepthought73/mandelbrot-viewer against master#da2544bfbe84df7b24d83c029c74299ebf6112c6 for pr-149681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepthought73%2Fmandelbrot-viewer" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Deepthought73/mandelbrot-viewer
[INFO] finished tweaking git repo https://github.com/Deepthought73/mandelbrot-viewer
[INFO] tweaked toml for git repo https://github.com/Deepthought73/mandelbrot-viewer written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Deepthought73/mandelbrot-viewer on toolchain da2544bfbe84df7b24d83c029c74299ebf6112c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Deepthought73/mandelbrot-viewer 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" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ocl-core-vector v0.1.0
[INFO] [stderr]   Downloaded cl-sys v0.4.2
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded qutex v0.2.3
[INFO] [stderr]   Downloaded zune-inflate v0.2.53
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded ocl-core v0.11.3
[INFO] [stderr]   Downloaded ocl v0.19.4
[INFO] [stderr]   Downloaded rug v1.19.2
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cda9f6a7d3ec15b655635a48de4f1b07d33839f566e5918ec0214c86baa94e2
[INFO] running `Command { std: "docker" "start" "-a" "2cda9f6a7d3ec15b655635a48de4f1b07d33839f566e5918ec0214c86baa94e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cda9f6a7d3ec15b655635a48de4f1b07d33839f566e5918ec0214c86baa94e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cda9f6a7d3ec15b655635a48de4f1b07d33839f566e5918ec0214c86baa94e2", kill_on_drop: false }`
[INFO] [stdout] 2cda9f6a7d3ec15b655635a48de4f1b07d33839f566e5918ec0214c86baa94e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80141864135f996c018a98944c6f176b8364d14d4ac9b1cdf1d4a90bab83c5f3
[INFO] running `Command { std: "docker" "start" "-a" "80141864135f996c018a98944c6f176b8364d14d4ac9b1cdf1d4a90bab83c5f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.5.2
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling cl-sys v0.4.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking futures-sink v0.3.28
[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/da2544bfbe84df7b24d83c029c74299ebf6112c6/library/alloc/src/borrow.rs:182:29
[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]    Compiling az v1.2.1
[INFO] [stderr]     Checking zune-inflate v0.2.53
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking fdeflate v0.3.0
[INFO] [stderr]    Compiling rug v1.19.2
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking gif v0.12.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "80141864135f996c018a98944c6f176b8364d14d4ac9b1cdf1d4a90bab83c5f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80141864135f996c018a98944c6f176b8364d14d4ac9b1cdf1d4a90bab83c5f3", kill_on_drop: false }`
[INFO] [stdout] 80141864135f996c018a98944c6f176b8364d14d4ac9b1cdf1d4a90bab83c5f3
