[INFO] crate johnston 0.2.1 is already in cache
[INFO] checking johnston-0.2.1 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate johnston 0.2.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate johnston 0.2.1 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate johnston 0.2.1
[INFO] finished tweaking crates.io crate johnston 0.2.1
[INFO] tweaked toml for crates.io crate johnston 0.2.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate johnston 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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] ce6a781e92c2449ba457584db78c3806d3f227f4b20b0e6112d7b2580209725a
[INFO] running `"docker" "start" "-a" "ce6a781e92c2449ba457584db78c3806d3f227f4b20b0e6112d7b2580209725a"`
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking johnston v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `factors`
[INFO] [stderr]    --> src/lib.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn factors(num: i32) -> Vec<i32> {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prime`
[INFO] [stderr]    --> src/lib.rs:120:4
[INFO] [stderr]     |
[INFO] [stderr] 120 | fn prime(num: i32) -> bool {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `power_of_two`
[INFO] [stderr]    --> src/lib.rs:130:4
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn power_of_two(num: i32) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gpf`
[INFO] [stderr]    --> src/lib.rs:134:4
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn gpf(num: i32) -> i32 {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.09s
[INFO] running `"docker" "inspect" "ce6a781e92c2449ba457584db78c3806d3f227f4b20b0e6112d7b2580209725a"`
[INFO] running `"docker" "rm" "-f" "ce6a781e92c2449ba457584db78c3806d3f227f4b20b0e6112d7b2580209725a"`
[INFO] [stdout] ce6a781e92c2449ba457584db78c3806d3f227f4b20b0e6112d7b2580209725a