[INFO] cloning repository https://github.com/bodagovsky/LFUcache [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bodagovsky/LFUcache" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2FLFUcache", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2FLFUcache'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c30840f7492a657be08f520ac7fa707dcecb6d72 [INFO] checking bodagovsky/LFUcache against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2FLFUcache" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bodagovsky/LFUcache on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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-1/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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] 7898fd4488135013f2b85e7c4d9c8aa06e6b6baf1840a087d968e10c89752570 [INFO] running `Command { std: "docker" "start" "-a" "7898fd4488135013f2b85e7c4d9c8aa06e6b6baf1840a087d968e10c89752570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7898fd4488135013f2b85e7c4d9c8aa06e6b6baf1840a087d968e10c89752570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7898fd4488135013f2b85e7c4d9c8aa06e6b6baf1840a087d968e10c89752570", kill_on_drop: false }` [INFO] [stdout] 7898fd4488135013f2b85e7c4d9c8aa06e6b6baf1840a087d968e10c89752570 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 945e3f8ef8af9b6e1bce730cd5e2fc7f696916d093a17f177a1f92fe04e518d7 [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" "945e3f8ef8af9b6e1bce730cd5e2fc7f696916d093a17f177a1f92fe04e518d7", 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 0.83s [INFO] running `Command { std: "docker" "inspect" "945e3f8ef8af9b6e1bce730cd5e2fc7f696916d093a17f177a1f92fe04e518d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "945e3f8ef8af9b6e1bce730cd5e2fc7f696916d093a17f177a1f92fe04e518d7", kill_on_drop: false }` [INFO] [stdout] 945e3f8ef8af9b6e1bce730cd5e2fc7f696916d093a17f177a1f92fe04e518d7