[INFO] fetching crate intercom-attributes 0.3.0...
[INFO] checking intercom-attributes-0.3.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate intercom-attributes 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate intercom-attributes 0.3.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intercom-common v0.3.0
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3239a342a629b0cb803eb13bbcae9785cdb06ea1141378eaedff819f1bcf8798
[INFO] running `Command { std: "docker" "start" "-a" "3239a342a629b0cb803eb13bbcae9785cdb06ea1141378eaedff819f1bcf8798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3239a342a629b0cb803eb13bbcae9785cdb06ea1141378eaedff819f1bcf8798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3239a342a629b0cb803eb13bbcae9785cdb06ea1141378eaedff819f1bcf8798", kill_on_drop: false }`
[INFO] [stdout] 3239a342a629b0cb803eb13bbcae9785cdb06ea1141378eaedff819f1bcf8798
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3d26ddba3293cea76ef5085215c822d5bcc9f49adaddcec2ff398764fc1be176
[INFO] running `Command { std: "docker" "start" "-a" "3d26ddba3293cea76ef5085215c822d5bcc9f49adaddcec2ff398764fc1be176", kill_on_drop: false }`
[INFO] [stderr]     Checking sha1 v0.3.0
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling backtrace v0.3.54
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking handlebars v0.29.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling intercom-common v0.3.0
[INFO] [stderr]     Checking intercom-attributes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `difference`
[INFO] [stdout]  --> tests/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate difference;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `intercom-attributes`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3d26ddba3293cea76ef5085215c822d5bcc9f49adaddcec2ff398764fc1be176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d26ddba3293cea76ef5085215c822d5bcc9f49adaddcec2ff398764fc1be176", kill_on_drop: false }`
[INFO] [stdout] 3d26ddba3293cea76ef5085215c822d5bcc9f49adaddcec2ff398764fc1be176