[INFO] updating cached repository https://github.com/bodagovsky/LFUcache
[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] c30840f7492a657be08f520ac7fa707dcecb6d72
[INFO] checking bodagovsky/LFUcache against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2FLFUcache" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bodagovsky/LFUcache on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bodagovsky/LFUcache
[INFO] finished tweaking git repo https://github.com/bodagovsky/LFUcache
[INFO] tweaked toml for git repo https://github.com/bodagovsky/LFUcache written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bodagovsky/LFUcache already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfde7e462377f51aa3dc4dfed471fe6a9da47fa3be5a4ac1fdace3761f872a30
[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" "bfde7e462377f51aa3dc4dfed471fe6a9da47fa3be5a4ac1fdace3761f872a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfde7e462377f51aa3dc4dfed471fe6a9da47fa3be5a4ac1fdace3761f872a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfde7e462377f51aa3dc4dfed471fe6a9da47fa3be5a4ac1fdace3761f872a30", kill_on_drop: false }`
[INFO] [stdout] bfde7e462377f51aa3dc4dfed471fe6a9da47fa3be5a4ac1fdace3761f872a30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a3fa69334bc4676f0a1f05d28f1a351185ec62518eb1204b303be414bd1d238
[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" "3a3fa69334bc4676f0a1f05d28f1a351185ec62518eb1204b303be414bd1d238", kill_on_drop: false }`
[INFO] [stderr]     Checking lfu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: module `LFU` should have a snake case name
[INFO] [stdout]  --> src/cache.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod LFU {
[INFO] [stdout]   |         ^^^ help: convert the identifier to snake case: `lfu`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             write!(f, "length: {}\n", self.len);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             write!(f, "capacity: {}\n", self.cap);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 | /                 write!(
[INFO] [stdout] 53 | |                     f,
[INFO] [stdout] 54 | |                     "[ key: {}, value: {} ]",
[INFO] [stdout] 55 | |                     ch.borrow().key,
[INFO] [stdout] 56 | |                     ch.borrow().val
[INFO] [stdout] 57 | |                 );
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LFU` should have a snake case name
[INFO] [stdout]  --> src/cache.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod LFU {
[INFO] [stdout]   |         ^^^ help: convert the identifier to snake case: `lfu`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             write!(f, "length: {}\n", self.len);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             write!(f, "capacity: {}\n", self.cap);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cache.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 | /                 write!(
[INFO] [stdout] 53 | |                     f,
[INFO] [stdout] 54 | |                     "[ key: {}, value: {} ]",
[INFO] [stdout] 55 | |                     ch.borrow().key,
[INFO] [stdout] 56 | |                     ch.borrow().val
[INFO] [stdout] 57 | |                 );
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "3a3fa69334bc4676f0a1f05d28f1a351185ec62518eb1204b303be414bd1d238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a3fa69334bc4676f0a1f05d28f1a351185ec62518eb1204b303be414bd1d238", kill_on_drop: false }`
[INFO] [stdout] 3a3fa69334bc4676f0a1f05d28f1a351185ec62518eb1204b303be414bd1d238