[INFO] updating cached repository https://github.com/kpcyrd/defcon26-pow [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d17edcaf67cb2a8455e7797f3a373b9c250a3cee [INFO] checking kpcyrd/defcon26-pow against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpcyrd%2Fdefcon26-pow" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kpcyrd/defcon26-pow on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kpcyrd/defcon26-pow [INFO] finished tweaking git repo https://github.com/kpcyrd/defcon26-pow [INFO] tweaked toml for git repo https://github.com/kpcyrd/defcon26-pow written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/kpcyrd/defcon26-pow already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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] 83749ab0019dd38476ce52710cf2549fc5e149181c686406ac462e28b8ebebf2 [INFO] running `Command { std: "docker" "start" "-a" "83749ab0019dd38476ce52710cf2549fc5e149181c686406ac462e28b8ebebf2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "83749ab0019dd38476ce52710cf2549fc5e149181c686406ac462e28b8ebebf2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83749ab0019dd38476ce52710cf2549fc5e149181c686406ac462e28b8ebebf2", kill_on_drop: false }` [INFO] [stdout] 83749ab0019dd38476ce52710cf2549fc5e149181c686406ac462e28b8ebebf2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f3e47e94c3ca1a46cb57301875a3c7791e3a1f434edbf9ad36f9613437f9669d [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" "f3e47e94c3ca1a46cb57301875a3c7791e3a1f434edbf9ad36f9613437f9669d", kill_on_drop: false }` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling num-traits v0.2.4 [INFO] [stderr] Checking arrayref v0.3.4 [INFO] [stderr] Checking generic-array v0.9.0 [INFO] [stderr] Checking block-buffer v0.3.3 [INFO] [stderr] Checking digest v0.7.2 [INFO] [stderr] Checking sha2 v0.7.1 [INFO] [stderr] Checking num-integer v0.1.38 [INFO] [stderr] Checking num-bigint v0.1.43 [INFO] [stderr] Checking defcon26-pow v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stdout] --> src/main.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 82 | / children.into_iter() [INFO] [stdout] 83 | | .map(|c| c.join().unwrap()) [INFO] [stdout] 84 | | .collect::>(); [INFO] [stdout] | |_____________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stdout] --> src/main.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 82 | / children.into_iter() [INFO] [stdout] 83 | | .map(|c| c.join().unwrap()) [INFO] [stdout] 84 | | .collect::>(); [INFO] [stdout] | |_____________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.13s [INFO] running `Command { std: "docker" "inspect" "f3e47e94c3ca1a46cb57301875a3c7791e3a1f434edbf9ad36f9613437f9669d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3e47e94c3ca1a46cb57301875a3c7791e3a1f434edbf9ad36f9613437f9669d", kill_on_drop: false }` [INFO] [stdout] f3e47e94c3ca1a46cb57301875a3c7791e3a1f434edbf9ad36f9613437f9669d