[INFO] fetching crate diff 0.1.12...
[INFO] checking diff-0.1.12 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate diff 0.1.12 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate diff 0.1.12 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate diff 0.1.12
[INFO] finished tweaking crates.io crate diff 0.1.12
[INFO] tweaked toml for crates.io crate diff 0.1.12 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate diff 0.1.12 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36ac379ca21ac31c935f451094490c295eb3bb62b6afe6d6d4da2420705b3faf
[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" "36ac379ca21ac31c935f451094490c295eb3bb62b6afe6d6d4da2420705b3faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36ac379ca21ac31c935f451094490c295eb3bb62b6afe6d6d4da2420705b3faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ac379ca21ac31c935f451094490c295eb3bb62b6afe6d6d4da2420705b3faf", kill_on_drop: false }`
[INFO] [stdout] 36ac379ca21ac31c935f451094490c295eb3bb62b6afe6d6d4da2420705b3faf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f991e44a8a094b7b17120d50ca41f7b6555b7feda50a87ba3d1cd27095b24458
[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" "f991e44a8a094b7b17120d50ca41f7b6555b7feda50a87ba3d1cd27095b24458", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking diff v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking log v0.4.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]    Compiling speculate v0.1.2
[INFO] [stdout] error: /opt/rustwide/target/debug/deps/libspeculate-22d01f1b3d6e516d.so: undefined symbol: __rustc_plugin_registrar_db266e21c9d1a31c9d9761956fa67414__
[INFO] [stdout]  --> benches/benches.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![plugin(speculate)]
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diff`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f991e44a8a094b7b17120d50ca41f7b6555b7feda50a87ba3d1cd27095b24458", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f991e44a8a094b7b17120d50ca41f7b6555b7feda50a87ba3d1cd27095b24458", kill_on_drop: false }`
[INFO] [stdout] f991e44a8a094b7b17120d50ca41f7b6555b7feda50a87ba3d1cd27095b24458