[INFO] cloning repository https://github.com/pjrule/frcw.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pjrule/frcw.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpjrule%2Ffrcw.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpjrule%2Ffrcw.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 894ebaaa8019bb4844dd6a0e5b86c7ba9ad09024 [INFO] checking pjrule/frcw.rs against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpjrule%2Ffrcw.rs" "/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/pjrule/frcw.rs on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/pjrule/frcw.rs [INFO] finished tweaking git repo https://github.com/pjrule/frcw.rs [INFO] tweaked toml for git repo https://github.com/pjrule/frcw.rs written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/pjrule/frcw.rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3846bb5b07d211c5e087263fa12851d8d61e6f72cee7f4c449f04969cf460e6e [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" "3846bb5b07d211c5e087263fa12851d8d61e6f72cee7f4c449f04969cf460e6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3846bb5b07d211c5e087263fa12851d8d61e6f72cee7f4c449f04969cf460e6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3846bb5b07d211c5e087263fa12851d8d61e6f72cee7f4c449f04969cf460e6e", kill_on_drop: false }` [INFO] [stdout] 3846bb5b07d211c5e087263fa12851d8d61e6f72cee7f4c449f04969cf460e6e [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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 90ed6e1289a7a607ab3126b3baeefe1d95b0b6cab05a69d729c5f88ee26da445 [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" "90ed6e1289a7a607ab3126b3baeefe1d95b0b6cab05a69d729c5f88ee26da445", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.91 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling typenum v1.13.0 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking block-padding v0.2.1 [INFO] [stderr] Checking opaque-debug v0.3.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking keccak v0.1.0 [INFO] [stderr] Compiling libmimalloc-sys v0.1.21 [INFO] [stderr] Compiling jemalloc-sys v0.3.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking crossbeam-epoch v0.9.3 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking crossbeam-queue v0.3.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking crossbeam v0.8.0 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking sha3 v0.9.1 [INFO] [stderr] Checking mimalloc v0.1.25 [INFO] [stderr] Checking jemallocator v0.3.2 [INFO] [stderr] Checking frcw v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:591:15 [INFO] [stdout] | [INFO] [stdout] 591 | return Ok((buf.balance_nodes.len())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/main.rs:591:15 [INFO] [stdout] | [INFO] [stdout] 591 | return Ok((buf.balance_nodes.len())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prob_correction` [INFO] [stdout] --> src/main.rs:551:13 [INFO] [stdout] | [INFO] [stdout] 551 | let mut prob_correction = 1.0; [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prob_correction` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:715:17 [INFO] [stdout] | [INFO] [stdout] 715 | for i in 0..n_threads { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prob_correction` [INFO] [stdout] --> src/main.rs:551:13 [INFO] [stdout] | [INFO] [stdout] 551 | let mut prob_correction = 1.0; [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prob_correction` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:715:17 [INFO] [stdout] | [INFO] [stdout] 715 | for i in 0..n_threads { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:551:9 [INFO] [stdout] | [INFO] [stdout] 551 | let mut prob_correction = 1.0; [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:850:17 [INFO] [stdout] | [INFO] [stdout] 850 | let (graph, mut partition) = from_networkx( [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `invariants` [INFO] [stdout] --> src/main.rs:307:12 [INFO] [stdout] | [INFO] [stdout] 307 | pub fn invariants(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `contiguous` [INFO] [stdout] --> src/main.rs:310:8 [INFO] [stdout] | [INFO] [stdout] 310 | fn contiguous(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pops_in_tolerance` [INFO] [stdout] --> src/main.rs:314:8 [INFO] [stdout] | [INFO] [stdout] 314 | fn pops_in_tolerance(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `consec_labels` [INFO] [stdout] --> src/main.rs:318:8 [INFO] [stdout] | [INFO] [stdout] 318 | fn consec_labels(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `M` should have a snake case name [INFO] [stdout] --> src/main.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | M: u32, [INFO] [stdout] | ^ help: convert the identifier to snake case: `m` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:551:9 [INFO] [stdout] | [INFO] [stdout] 551 | let mut prob_correction = 1.0; [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:695:21 [INFO] [stdout] | [INFO] [stdout] 695 | / res_s.send(ResultPacket { [INFO] [stdout] 696 | | counts: counts, [INFO] [stdout] 697 | | proposals: proposals, [INFO] [stdout] 698 | | }); [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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:706:17 [INFO] [stdout] | [INFO] [stdout] 706 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: false }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: comparison is useless due to type limits [INFO] [stdout] --> src/main.rs:726:24 [INFO] [stdout] | [INFO] [stdout] 726 | if event >= 0 && event < counts.non_adjacent { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_comparisons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:738:29 [INFO] [stdout] | [INFO] [stdout] 738 | / ... job.send(JobPacket { [INFO] [stdout] 739 | | ... n_steps: batch_size, [INFO] [stdout] 740 | | ... diff: Some(proposal.clone()), [INFO] [stdout] 741 | | ... terminate: false [INFO] [stdout] 742 | | ... }); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:758:21 [INFO] [stdout] | [INFO] [stdout] 758 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: false }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:763:13 [INFO] [stdout] | [INFO] [stdout] 763 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: true }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `M` should have a snake case name [INFO] [stdout] --> src/main.rs:841:9 [INFO] [stdout] | [INFO] [stdout] 841 | let M = value_t!(matches.value_of("M"), u32).unwrap_or_else(|e| e.exit()); [INFO] [stdout] | ^ help: convert the identifier to snake case: `m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:867:5 [INFO] [stdout] | [INFO] [stdout] 867 | io::copy(&mut graph_file, &mut graph_hasher); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:850:17 [INFO] [stdout] | [INFO] [stdout] 850 | let (graph, mut partition) = from_networkx( [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `invariants` [INFO] [stdout] --> src/main.rs:307:12 [INFO] [stdout] | [INFO] [stdout] 307 | pub fn invariants(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `contiguous` [INFO] [stdout] --> src/main.rs:310:8 [INFO] [stdout] | [INFO] [stdout] 310 | fn contiguous(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pops_in_tolerance` [INFO] [stdout] --> src/main.rs:314:8 [INFO] [stdout] | [INFO] [stdout] 314 | fn pops_in_tolerance(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `consec_labels` [INFO] [stdout] --> src/main.rs:318:8 [INFO] [stdout] | [INFO] [stdout] 318 | fn consec_labels(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `M` should have a snake case name [INFO] [stdout] --> src/main.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | M: u32, [INFO] [stdout] | ^ help: convert the identifier to snake case: `m` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:695:21 [INFO] [stdout] | [INFO] [stdout] 695 | / res_s.send(ResultPacket { [INFO] [stdout] 696 | | counts: counts, [INFO] [stdout] 697 | | proposals: proposals, [INFO] [stdout] 698 | | }); [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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:706:17 [INFO] [stdout] | [INFO] [stdout] 706 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: false }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: comparison is useless due to type limits [INFO] [stdout] --> src/main.rs:726:24 [INFO] [stdout] | [INFO] [stdout] 726 | if event >= 0 && event < counts.non_adjacent { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_comparisons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:738:29 [INFO] [stdout] | [INFO] [stdout] 738 | / ... job.send(JobPacket { [INFO] [stdout] 739 | | ... n_steps: batch_size, [INFO] [stdout] 740 | | ... diff: Some(proposal.clone()), [INFO] [stdout] 741 | | ... terminate: false [INFO] [stdout] 742 | | ... }); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:758:21 [INFO] [stdout] | [INFO] [stdout] 758 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: false }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:763:13 [INFO] [stdout] | [INFO] [stdout] 763 | job.send(JobPacket{ n_steps: batch_size, diff: None, terminate: true }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `M` should have a snake case name [INFO] [stdout] --> src/main.rs:841:9 [INFO] [stdout] | [INFO] [stdout] 841 | let M = value_t!(matches.value_of("M"), u32).unwrap_or_else(|e| e.exit()); [INFO] [stdout] | ^ help: convert the identifier to snake case: `m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:867:5 [INFO] [stdout] | [INFO] [stdout] 867 | io::copy(&mut graph_file, &mut graph_hasher); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [optimized + debuginfo] target(s) in 1m 16s [INFO] running `Command { std: "docker" "inspect" "90ed6e1289a7a607ab3126b3baeefe1d95b0b6cab05a69d729c5f88ee26da445", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "90ed6e1289a7a607ab3126b3baeefe1d95b0b6cab05a69d729c5f88ee26da445", kill_on_drop: false }` [INFO] [stdout] 90ed6e1289a7a607ab3126b3baeefe1d95b0b6cab05a69d729c5f88ee26da445