[INFO] cloning repository https://github.com/benbrunton/firefly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benbrunton/firefly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Ffirefly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Ffirefly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5c5b7eb47d53d8f33328e4824c0e84874f662ed
[INFO] checking benbrunton/firefly against try#751cdbaf3a893bc71b2c617bb7be22dfea5f0862 for pr-95611
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Ffirefly" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benbrunton/firefly on toolchain 751cdbaf3a893bc71b2c617bb7be22dfea5f0862
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benbrunton/firefly
[INFO] finished tweaking git repo https://github.com/benbrunton/firefly
[INFO] tweaked toml for git repo https://github.com/benbrunton/firefly written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/benbrunton/firefly already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9517ec94b4370f28ff1c61a3e10c9cd72958b86fba088632ccdbc5987adeea92
[INFO] running `Command { std: "docker" "start" "-a" "9517ec94b4370f28ff1c61a3e10c9cd72958b86fba088632ccdbc5987adeea92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9517ec94b4370f28ff1c61a3e10c9cd72958b86fba088632ccdbc5987adeea92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9517ec94b4370f28ff1c61a3e10c9cd72958b86fba088632ccdbc5987adeea92", kill_on_drop: false }`
[INFO] [stdout] 9517ec94b4370f28ff1c61a3e10c9cd72958b86fba088632ccdbc5987adeea92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ce2da205d6d6aed39aac4e2477d8fe618f4ab4773ce243520083184a4e0a2d
[INFO] running `Command { std: "docker" "start" "-a" "a5ce2da205d6d6aed39aac4e2477d8fe618f4ab4773ce243520083184a4e0a2d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling bytecount v0.4.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking mint v0.5.1
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking matrixmultiply v0.2.2
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.98/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=dded5521e6d4428a -C extra-filename=-dded5521e6d4428a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid --cfg ops_bound --cfg core_reverse --cfg de_boxed_c_str --cfg de_rc_dst --cfg core_duration --cfg integer128 --cfg range_inclusive --cfg num_nonzero --cfg core_try_from --cfg num_nonzero_signed --cfg std_atomic64 --cfg std_atomic` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a5ce2da205d6d6aed39aac4e2477d8fe618f4ab4773ce243520083184a4e0a2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ce2da205d6d6aed39aac4e2477d8fe618f4ab4773ce243520083184a4e0a2d", kill_on_drop: false }`
[INFO] [stdout] a5ce2da205d6d6aed39aac4e2477d8fe618f4ab4773ce243520083184a4e0a2d