[INFO] cloning repository https://github.com/twilco/kosmonaut
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twilco/kosmonaut" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fkosmonaut", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fkosmonaut'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1cbbdadf07e0af6143fe534457a9043aeaf502f
[INFO] checking twilco/kosmonaut against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fkosmonaut" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/twilco/kosmonaut on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/twilco/kosmonaut
[INFO] finished tweaking git repo https://github.com/twilco/kosmonaut
[INFO] tweaked toml for git repo https://github.com/twilco/kosmonaut written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/twilco/kosmonaut already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/twilco/font-kit`
[INFO] [stderr]     Updating git repository `https://github.com/twilco/datatest`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum_dispatch v0.3.5
[INFO] [stderr]   Downloaded freetype v0.5.1
[INFO] [stderr]   Downloaded isahc v1.4.0
[INFO] [stderr]   Downloaded servo-fontconfig-sys v5.0.1
[INFO] [stderr]   Downloaded freetype-sys v0.11.0
[INFO] [stderr]   Downloaded accountable-refcell v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd98c6cc3b2be950f729b0481bd5d5151820b656a1e8b3f67d3253326eec0e55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd98c6cc3b2be950f729b0481bd5d5151820b656a1e8b3f67d3253326eec0e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd98c6cc3b2be950f729b0481bd5d5151820b656a1e8b3f67d3253326eec0e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd98c6cc3b2be950f729b0481bd5d5151820b656a1e8b3f67d3253326eec0e55", kill_on_drop: false }`
[INFO] [stdout] fd98c6cc3b2be950f729b0481bd5d5151820b656a1e8b3f67d3253326eec0e55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cf32f3c33c30ce754f3cb9b538eb4d5945f5f383591f7285b883f4cd7ccc77a
[INFO] running `Command { std: "docker" "start" "-a" "7cf32f3c33c30ce754f3cb9b538eb4d5945f5f383591f7285b883f4cd7ccc77a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking smallbitvec v2.5.0
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling isahc v1.4.0
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.0.1
[INFO] [stderr]    Compiling curl-sys v0.4.44+curl-7.77.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling datatest v0.6.4 (https://github.com/twilco/datatest?branch=downgrade-version-check#148a6ccf)
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling freetype-sys v0.11.0
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking sluice v0.5.4
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking regex v1.4.4
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking polling v2.0.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling gl v0.1.0 (/opt/rustwide/workdir/components/gl)
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking freetype v0.5.1
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking servo-fontconfig v0.5.0
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]     Checking accountable-refcell v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking font-kit v0.9.0 (https://github.com/twilco/font-kit#36dbce30)
[INFO] [stderr]     Checking cli v0.1.0 (/opt/rustwide/workdir/components/cli)
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking wayland-commons v0.28.5
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking darling_core v0.12.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking wayland-cursor v0.28.5
[INFO] [stderr]     Checking wayland-egl v0.28.5
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.5
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.14
[INFO] [stderr]    Compiling ctor v0.1.19
[INFO] [stderr]    Compiling datatest-derive v0.6.4 (https://github.com/twilco/datatest?branch=downgrade-version-check#148a6ccf)
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]    Compiling darling_macro v0.12.3
[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-1.0.124/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=9650e8e2b84affa9 -C extra-filename=-9650e8e2b84affa9 --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-1be2cecfcfd4ab86.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-e7b4aeb6aa35bd56.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" "7cf32f3c33c30ce754f3cb9b538eb4d5945f5f383591f7285b883f4cd7ccc77a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cf32f3c33c30ce754f3cb9b538eb4d5945f5f383591f7285b883f4cd7ccc77a", kill_on_drop: false }`
[INFO] [stdout] 7cf32f3c33c30ce754f3cb9b538eb4d5945f5f383591f7285b883f4cd7ccc77a