[INFO] cloning repository https://github.com/suntorvic/nugem-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suntorvic/nugem-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuntorvic%2Fnugem-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuntorvic%2Fnugem-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fa0fc9192f65f7c6575944ab6037e23c681c4ef
[INFO] checking suntorvic/nugem-rs against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuntorvic%2Fnugem-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/suntorvic/nugem-rs on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/suntorvic/nugem-rs
[INFO] finished tweaking git repo https://github.com/suntorvic/nugem-rs
[INFO] tweaked toml for git repo https://github.com/suntorvic/nugem-rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/suntorvic/nugem-rs 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossfont v0.5.1
[INFO] [stderr]   Downloaded skip_bom v0.5.0
[INFO] [stderr]   Downloaded sctk-adwaita v0.4.3
[INFO] [stderr]   Downloaded gilrs-core v0.4.1
[INFO] [stderr]   Downloaded gilrs v0.9.0
[INFO] [stderr]   Downloaded wgpu v0.14.0
[INFO] [stderr]   Downloaded unrar_sys v0.2.1
[INFO] [stderr]   Downloaded ash v0.37.0+1.3.209
[INFO] [stderr]   Downloaded wgpu-core v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2921d7f6ca8f5d16ab26c3ef4552dfba1e3c835de0a7bc974b75e52130c636b
[INFO] running `Command { std: "docker" "start" "-a" "e2921d7f6ca8f5d16ab26c3ef4552dfba1e3c835de0a7bc974b75e52130c636b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2921d7f6ca8f5d16ab26c3ef4552dfba1e3c835de0a7bc974b75e52130c636b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2921d7f6ca8f5d16ab26c3ef4552dfba1e3c835de0a7bc974b75e52130c636b", kill_on_drop: false }`
[INFO] [stdout] e2921d7f6ca8f5d16ab26c3ef4552dfba1e3c835de0a7bc974b75e52130c636b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cc51259e464635ace8b5203576ee75c84dcd959aec93f6e9fbcb2740ccba958
[INFO] running `Command { std: "docker" "start" "-a" "8cc51259e464635ace8b5203576ee75c84dcd959aec93f6e9fbcb2740ccba958", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling ash v0.37.0+1.3.209
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8cc51259e464635ace8b5203576ee75c84dcd959aec93f6e9fbcb2740ccba958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cc51259e464635ace8b5203576ee75c84dcd959aec93f6e9fbcb2740ccba958", kill_on_drop: false }`
[INFO] [stdout] 8cc51259e464635ace8b5203576ee75c84dcd959aec93f6e9fbcb2740ccba958