[INFO] fetching crate frank 0.1.3...
[INFO] checking frank-0.1.3 against 1.55.0 for beta-1.56-3
[INFO] extracting crate frank 0.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate frank 0.1.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frank 0.1.3
[INFO] finished tweaking crates.io crate frank 0.1.3
[INFO] tweaked toml for crates.io crate frank 0.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 896221a7e77e3a9c59c74701c4bb27d4a5e960f78e06d9a5b5111034b2373ab4
[INFO] running `Command { std: "docker" "start" "-a" "896221a7e77e3a9c59c74701c4bb27d4a5e960f78e06d9a5b5111034b2373ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "896221a7e77e3a9c59c74701c4bb27d4a5e960f78e06d9a5b5111034b2373ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "896221a7e77e3a9c59c74701c4bb27d4a5e960f78e06d9a5b5111034b2373ab4", kill_on_drop: false }`
[INFO] [stdout] 896221a7e77e3a9c59c74701c4bb27d4a5e960f78e06d9a5b5111034b2373ab4
[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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9d51ffb0e98a5494680d63e5c74e375f93e515f5687e6ce4138f8d47d9e50a2
[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" "b9d51ffb0e98a5494680d63e5c74e375f93e515f5687e6ce4138f8d47d9e50a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking frank v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `remains` is never read
[INFO] [stdout]    --> src/lib.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle...
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `remains` is never read
[INFO] [stdout]    --> src/lib.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle...
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `remains` is never read
[INFO] [stdout]    --> src/main.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle...
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rcl`
[INFO] [stdout]    --> src/main.rs:489:9
[INFO] [stdout]     |
[INFO] [stdout] 489 |     let rcl = rank_count_lesser(&spinning);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rcl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `remains` is never read
[INFO] [stdout]    --> src/main.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle...
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rcl`
[INFO] [stdout]    --> src/main.rs:489:9
[INFO] [stdout]     |
[INFO] [stdout] 489 |     let rcl = rank_count_lesser(&spinning);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rcl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "b9d51ffb0e98a5494680d63e5c74e375f93e515f5687e6ce4138f8d47d9e50a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9d51ffb0e98a5494680d63e5c74e375f93e515f5687e6ce4138f8d47d9e50a2", kill_on_drop: false }`
[INFO] [stdout] b9d51ffb0e98a5494680d63e5c74e375f93e515f5687e6ce4138f8d47d9e50a2
