[INFO] cloning repository https://github.com/HappyDustbunny/fern
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HappyDustbunny/fern" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappyDustbunny%2Ffern", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappyDustbunny%2Ffern'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c1269b509f8759110724eb87fadacd4081d82dae
[INFO] checking HappyDustbunny/fern against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappyDustbunny%2Ffern" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HappyDustbunny/fern on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HappyDustbunny/fern
[INFO] finished tweaking git repo https://github.com/HappyDustbunny/fern
[INFO] tweaked toml for git repo https://github.com/HappyDustbunny/fern written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/HappyDustbunny/fern already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cca0a1035b8b6cda07ce636d2d9208fbfbac3006185f40567f90f059adca36c1
[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" "cca0a1035b8b6cda07ce636d2d9208fbfbac3006185f40567f90f059adca36c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cca0a1035b8b6cda07ce636d2d9208fbfbac3006185f40567f90f059adca36c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cca0a1035b8b6cda07ce636d2d9208fbfbac3006185f40567f90f059adca36c1", kill_on_drop: false }`
[INFO] [stdout] cca0a1035b8b6cda07ce636d2d9208fbfbac3006185f40567f90f059adca36c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e67d2c02c219ca2826b6fa8dfc309339387d07d7e20c3b0d552dd28527b38225
[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" "e67d2c02c219ca2826b6fa8dfc309339387d07d7e20c3b0d552dd28527b38225", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking piston-float v0.3.0
[INFO] [stderr]    Compiling vulkano v0.13.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking half v1.3.0
[INFO] [stderr]     Checking vk-sys v0.4.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking instant v0.1.1
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking conrod_winit v0.66.0
[INFO] [stderr]     Checking find_folder v0.3.0
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling cmake v0.1.41
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking piston-viewport v0.5.0
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking getrandom v0.1.8
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking pennereq v0.3.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling shaderc-sys v0.5.1
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]     Checking daggy v0.5.0
[INFO] [stderr]     Checking daggy v0.6.0
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.14.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=d4bbd2d0ed2e5425 -C extra-filename=-d4bbd2d0ed2e5425 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-fd9559dce70b06c3.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-393d965cfa297558.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-13950c6fb1364162.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-56eae46330807fb7.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: signal: 9
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.0.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.1.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.10.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.11.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.12.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.13.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.14.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.15.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.2.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.3.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.4.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.5.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.6.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.7.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.8.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.build_script_build.82uq0p2h-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26" "/opt/rustwide/target/debug/build/wayland-protocols-d56e6a1c915dce26/build_script_build-d56e6a1c915dce26.1tjy6x7p0k67ksme.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libwayland_scanner-a528b984aef971f9.rlib" "/opt/rustwide/target/debug/deps/libxml-741d2021ace47d06.rlib" "/opt/rustwide/target/debug/deps/libquote-c8c4589b60ce3921.rlib" "/opt/rustwide/target/debug/deps/libproc_macro2-8115c969f6e9e75a.rlib" "/opt/rustwide/target/debug/deps/libunicode_xid-a81338cd23b23cba.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libproc_macro-32c6bf27c59d75f6.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-6f5658153d127ddd.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-b69e89b2ef7e009e.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-fe971cf9622d0c47.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9ff49e5df977573d.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-323dea4ee1c9a010.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-f12d17a047776008.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-3d968aa3120f6a27.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-22cd238a7814521c.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-f2c707309e5edc5c.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-6b6b4b2bc151fc5a.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-32b57ee4d7c8dc07.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d9f2cb19c79e847e.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-3ccc4a4f3013e9ef.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-aa547327a7679d28.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-90996f4879673567.rlib" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9ea09a899c3eda46.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/4a23c45c7893f1416456144e3883cc48ea91722e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ea377e9224b11a8a.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e67d2c02c219ca2826b6fa8dfc309339387d07d7e20c3b0d552dd28527b38225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e67d2c02c219ca2826b6fa8dfc309339387d07d7e20c3b0d552dd28527b38225", kill_on_drop: false }`
[INFO] [stdout] e67d2c02c219ca2826b6fa8dfc309339387d07d7e20c3b0d552dd28527b38225