[INFO] fetching crate diff 0.1.12...
[INFO] checking diff-0.1.12 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate diff 0.1.12 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate diff 0.1.12 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-3/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded speculate v0.1.2
[INFO] [stderr]   Downloaded log v0.4.10
[INFO] [stderr]   Downloaded quickcheck v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9b4a9b766dd3ee3204178354fae722f4cb582cd414061cf274d6d67371ff447
[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" "d9b4a9b766dd3ee3204178354fae722f4cb582cd414061cf274d6d67371ff447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9b4a9b766dd3ee3204178354fae722f4cb582cd414061cf274d6d67371ff447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b4a9b766dd3ee3204178354fae722f4cb582cd414061cf274d6d67371ff447", kill_on_drop: false }`
[INFO] [stdout] d9b4a9b766dd3ee3204178354fae722f4cb582cd414061cf274d6d67371ff447
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3914a4441cd833eb5eaf16b697f5b8816049c769e7646793e8d7697cb57a4b4f
[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" "3914a4441cd833eb5eaf16b697f5b8816049c769e7646793e8d7697cb57a4b4f", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling log v0.4.10
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking diff v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking regex v1.3.1
[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-af23f5f56d9414f6.so: undefined symbol: __rustc_plugin_registrar_5327aef45af25fc82146fa352b8527b4__
[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" "3914a4441cd833eb5eaf16b697f5b8816049c769e7646793e8d7697cb57a4b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3914a4441cd833eb5eaf16b697f5b8816049c769e7646793e8d7697cb57a4b4f", kill_on_drop: false }`
[INFO] [stdout] 3914a4441cd833eb5eaf16b697f5b8816049c769e7646793e8d7697cb57a4b4f