[INFO] cloning repository https://github.com/kjmoore12/scheduler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kjmoore12/scheduler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjmoore12%2Fscheduler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjmoore12%2Fscheduler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8dd9723c79ec86204032660f9711cfb6312ec291 [INFO] checking kjmoore12/scheduler against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjmoore12%2Fscheduler" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/kjmoore12/scheduler [INFO] finished tweaking git repo https://github.com/kjmoore12/scheduler [INFO] tweaked toml for git repo https://github.com/kjmoore12/scheduler written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kjmoore12/scheduler on toolchain 028201683a76a5cd349729c6819c46607119c4e8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kjmoore12/scheduler already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking kjmoore12/scheduler against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjmoore12%2Fscheduler" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/kjmoore12/scheduler [INFO] finished tweaking git repo https://github.com/kjmoore12/scheduler [INFO] tweaked toml for git repo https://github.com/kjmoore12/scheduler written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kjmoore12/scheduler on toolchain 028201683a76a5cd349729c6819c46607119c4e8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kjmoore12/scheduler already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fbcca3403f6189050769703b6ace24a486c90b9ed58dcb288c95988262252ba5 [INFO] running `Command { std: "docker" "start" "-a" "fbcca3403f6189050769703b6ace24a486c90b9ed58dcb288c95988262252ba5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fbcca3403f6189050769703b6ace24a486c90b9ed58dcb288c95988262252ba5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbcca3403f6189050769703b6ace24a486c90b9ed58dcb288c95988262252ba5", kill_on_drop: false }` [INFO] [stdout] fbcca3403f6189050769703b6ace24a486c90b9ed58dcb288c95988262252ba5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cb494fc90726ee5f3cf4e4292adb5eae593a0d552975454d0a5ecb486c8107d8 [INFO] running `Command { std: "docker" "start" "-a" "cb494fc90726ee5f3cf4e4292adb5eae593a0d552975454d0a5ecb486c8107d8", kill_on_drop: false }` [INFO] [stderr] Checking scheduler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `crate::process_structs::ArrivalSortedProcess` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::process_structs::ArrivalSortedProcess; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::process_structs::DurationSortedProcess` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::process_structs::DurationSortedProcess; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/scheduling.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/scheduling.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp` [INFO] [stdout] --> src/scheduling.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::BinaryHeap` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::collections::BinaryHeap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::process_structs::ArrivalSortedProcess` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::process_structs::ArrivalSortedProcess; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::process_structs::DurationSortedProcess` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::process_structs::DurationSortedProcess; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/scheduling.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/scheduling.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp` [INFO] [stdout] --> src/scheduling.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::BinaryHeap` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::collections::BinaryHeap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:91:21 [INFO] [stdout] | [INFO] [stdout] 91 | let mut process = ArrivalSortedProcess{ [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: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:115:13 [INFO] [stdout] | [INFO] [stdout] 115 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:122:29 [INFO] [stdout] | [INFO] [stdout] 122 | let mut process = DurationSortedProcess{arrival: top.arrival, duration: top.duration, first_run: 0, completion: 0}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:146:29 [INFO] [stdout] | [INFO] [stdout] 146 | ... let mut process = ArrivalSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: time, completion: top.duration + t... [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:175:13 [INFO] [stdout] | [INFO] [stdout] 175 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:91:21 [INFO] [stdout] | [INFO] [stdout] 91 | let mut process = ArrivalSortedProcess{ [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: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:115:13 [INFO] [stdout] | [INFO] [stdout] 115 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:182:29 [INFO] [stdout] | [INFO] [stdout] 182 | ... let mut process = DurationSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: -1, completion: top.duration}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:246:13 [INFO] [stdout] | [INFO] [stdout] 246 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:122:29 [INFO] [stdout] | [INFO] [stdout] 122 | let mut process = DurationSortedProcess{arrival: top.arrival, duration: top.duration, first_run: 0, completion: 0}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:146:29 [INFO] [stdout] | [INFO] [stdout] 146 | ... let mut process = ArrivalSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: time, completion: top.duration + t... [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:175:13 [INFO] [stdout] | [INFO] [stdout] 175 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:253:29 [INFO] [stdout] | [INFO] [stdout] 253 | ... let mut process = ArrivalSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: -1, completion: top.duration}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:316:9 [INFO] [stdout] | [INFO] [stdout] 316 | let mut size : f32 = processes.len() as f32; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:182:29 [INFO] [stdout] | [INFO] [stdout] 182 | ... let mut process = DurationSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: -1, completion: top.duration}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:325:9 [INFO] [stdout] | [INFO] [stdout] 325 | let mut size : f32 = processes.len() as f32; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_arrival` is never read [INFO] [stdout] --> src/scheduling.rs:246:13 [INFO] [stdout] | [INFO] [stdout] 246 | let mut next_arrival : i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:333:9 [INFO] [stdout] | [INFO] [stdout] 333 | let mut avg_t : f32 = avg_turnaround(processes); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:334:9 [INFO] [stdout] | [INFO] [stdout] 334 | let mut avg_r : f32 = avg_response(processes); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:36:13 [INFO] [stdout] | [INFO] [stdout] 36 | Err(e) => { // An error is caused by an invalidly formatted workload file [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:253:29 [INFO] [stdout] | [INFO] [stdout] 253 | ... let mut process = ArrivalSortedProcess{ arrival: top.arrival, duration: top.duration, first_run: -1, completion: top.duration}; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:316:9 [INFO] [stdout] | [INFO] [stdout] 316 | let mut size : f32 = processes.len() as f32; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut workload = scheduling::read_workload(workload_file); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:325:9 [INFO] [stdout] | [INFO] [stdout] 325 | let mut size : f32 = processes.len() as f32; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:333:9 [INFO] [stdout] | [INFO] [stdout] 333 | let mut avg_t : f32 = avg_turnaround(processes); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/scheduling.rs:334:9 [INFO] [stdout] | [INFO] [stdout] 334 | let mut avg_r : f32 = avg_response(processes); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:36:13 [INFO] [stdout] | [INFO] [stdout] 36 | Err(e) => { // An error is caused by an invalidly formatted workload file [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/scheduling.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | e; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(path_statements)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/scheduling.rs:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | e; [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut workload = scheduling::read_workload(workload_file); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/scheduling.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | e; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(path_statements)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/scheduling.rs:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | e; [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] running `Command { std: "docker" "inspect" "cb494fc90726ee5f3cf4e4292adb5eae593a0d552975454d0a5ecb486c8107d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb494fc90726ee5f3cf4e4292adb5eae593a0d552975454d0a5ecb486c8107d8", kill_on_drop: false }` [INFO] [stdout] cb494fc90726ee5f3cf4e4292adb5eae593a0d552975454d0a5ecb486c8107d8