[INFO] cloning repository https://github.com/johnterickson/rustdb
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnterickson/rustdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Frustdb"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Frustdb'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] edbeb754c778c3898ff9ed9aca721d2cac23398f
[INFO] checking johnterickson/rustdb against master#d939f708d960161d23b964309ba68ff207fc0ead for pr-70087
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Frustdb" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnterickson/rustdb on toolchain d939f708d960161d23b964309ba68ff207fc0ead
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/johnterickson/rustdb
[INFO] finished tweaking git repo https://github.com/johnterickson/rustdb
[INFO] tweaked toml for git repo https://github.com/johnterickson/rustdb written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/johnterickson/rustdb already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+d939f708d960161d23b964309ba68ff207fc0ead" "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] 7dc68ce05cef59214f1a004e8760153571ba026fe195fd2a8efb052eae8f26fb
[INFO] running `"docker" "start" "-a" "7dc68ce05cef59214f1a004e8760153571ba026fe195fd2a8efb052eae8f26fb"`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking jdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `as_leaf`
[INFO] [stderr]    --> src/main.rs:326:5
[INFO] [stderr]     |
[INFO] [stderr] 326 |     fn as_leaf(&self) -> &LeafNode {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `as_leaf`
[INFO] [stderr]    --> src/main.rs:326:5
[INFO] [stderr]     |
[INFO] [stderr] 326 |     fn as_leaf(&self) -> &LeafNode {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.73s
[INFO] running `"docker" "inspect" "7dc68ce05cef59214f1a004e8760153571ba026fe195fd2a8efb052eae8f26fb"`
[INFO] running `"docker" "rm" "-f" "7dc68ce05cef59214f1a004e8760153571ba026fe195fd2a8efb052eae8f26fb"`
[INFO] [stdout] 7dc68ce05cef59214f1a004e8760153571ba026fe195fd2a8efb052eae8f26fb