[INFO] fetching crate intercom-attributes 0.3.0...
[INFO] checking intercom-attributes-0.3.0 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] extracting crate intercom-attributes 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate intercom-attributes 0.3.0 on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate intercom-attributes 0.3.0
[INFO] finished tweaking crates.io crate intercom-attributes 0.3.0
[INFO] tweaked toml for crates.io crate intercom-attributes 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc6dfc49804c1c5ae87775e4f792f31f14c7c576b8c9e7882d9cefa6814a436b
[INFO] running `"docker" "start" "-a" "dc6dfc49804c1c5ae87775e4f792f31f14c7c576b8c9e7882d9cefa6814a436b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking sha1 v0.3.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking handlebars v0.29.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking intercom-common v0.3.0
[INFO] [stderr]     Checking intercom-attributes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `difference`
[INFO] [stderr]  --> tests/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate difference;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `intercom-attributes`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dc6dfc49804c1c5ae87775e4f792f31f14c7c576b8c9e7882d9cefa6814a436b"`
[INFO] running `"docker" "rm" "-f" "dc6dfc49804c1c5ae87775e4f792f31f14c7c576b8c9e7882d9cefa6814a436b"`
[INFO] [stdout] dc6dfc49804c1c5ae87775e4f792f31f14c7c576b8c9e7882d9cefa6814a436b