[INFO] fetching crate compactmap 0.3.7...
[INFO] checking compactmap-0.3.7 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate compactmap 0.3.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate compactmap 0.3.7 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compactmap 0.3.7
[INFO] finished tweaking crates.io crate compactmap 0.3.7
[INFO] tweaked toml for crates.io crate compactmap 0.3.7 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] 57b361b1f9c467a2ea32e1c4df3324ecb9c54f34f046356d2fc69f2da543fdbe
[INFO] running `Command { std: "docker" "start" "-a" "57b361b1f9c467a2ea32e1c4df3324ecb9c54f34f046356d2fc69f2da543fdbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57b361b1f9c467a2ea32e1c4df3324ecb9c54f34f046356d2fc69f2da543fdbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b361b1f9c467a2ea32e1c4df3324ecb9c54f34f046356d2fc69f2da543fdbe", kill_on_drop: false }`
[INFO] [stdout] 57b361b1f9c467a2ea32e1c4df3324ecb9c54f34f046356d2fc69f2da543fdbe
[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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4092e5167960eaf01be1b6ce54b1695ecd31174e957108dc3021da64b82eaf8f
[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" "4092e5167960eaf01be1b6ce54b1695ecd31174e957108dc3021da64b82eaf8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking compactmap v0.3.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stdout] warning: unknown lint: `map_clone`
[INFO] [stdout]    --> src/wrapped.rs:214:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |     #[allow(map_clone)]
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `map_clone`
[INFO] [stdout]    --> src/wrapped.rs:235:13
[INFO] [stdout]     |
[INFO] [stdout] 235 |     #[allow(map_clone)]
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking quickcheck v0.5.0
[INFO] [stdout] warning: unknown lint: `map_clone`
[INFO] [stdout]    --> src/wrapped.rs:214:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |     #[allow(map_clone)]
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `map_clone`
[INFO] [stdout]    --> src/wrapped.rs:235:13
[INFO] [stdout]     |
[INFO] [stdout] 235 |     #[allow(map_clone)]
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.98s
[INFO] running `Command { std: "docker" "inspect" "4092e5167960eaf01be1b6ce54b1695ecd31174e957108dc3021da64b82eaf8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4092e5167960eaf01be1b6ce54b1695ecd31174e957108dc3021da64b82eaf8f", kill_on_drop: false }`
[INFO] [stdout] 4092e5167960eaf01be1b6ce54b1695ecd31174e957108dc3021da64b82eaf8f