[INFO] cloning repository https://github.com/0xForked/lru
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xForked/lru" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xForked%2Flru", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xForked%2Flru'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5190e21463f9bdd43c498616123ac1a5f9ec1648
[INFO] checking 0xForked/lru against master#32cd9114712a24010b0583624dc52ac302194128 for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xForked%2Flru" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xForked/lru
[INFO] finished tweaking git repo https://github.com/0xForked/lru
[INFO] tweaked toml for git repo https://github.com/0xForked/lru written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xForked/lru on toolchain 32cd9114712a24010b0583624dc52ac302194128
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xForked/lru 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" "+32cd9114712a24010b0583624dc52ac302194128" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07d093a74b735e0939bcb5e2497ff4dc6278f733ca044b89d500004c17157355
[INFO] running `Command { std: "docker" "start" "-a" "07d093a74b735e0939bcb5e2497ff4dc6278f733ca044b89d500004c17157355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07d093a74b735e0939bcb5e2497ff4dc6278f733ca044b89d500004c17157355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07d093a74b735e0939bcb5e2497ff4dc6278f733ca044b89d500004c17157355", kill_on_drop: false }`
[INFO] [stdout] 07d093a74b735e0939bcb5e2497ff4dc6278f733ca044b89d500004c17157355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20227fc6d62feff5c2bf5f415c61d76b9381f4c94299ae5c1610e4127223df3a
[INFO] running `Command { std: "docker" "start" "-a" "20227fc6d62feff5c2bf5f415c61d76b9381f4c94299ae5c1610e4127223df3a", kill_on_drop: false }`
[INFO] [stderr]     Checking rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:386:6
[INFO] [stdout]     |
[INFO] [stdout] 386 |         'inner_while: while c2 < 6 {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:417:7
[INFO] [stdout]     |
[INFO] [stdout] 417 |       'inner_loop: loop {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:445:7
[INFO] [stdout]     |
[INFO] [stdout] 445 |       'inner_for: for c2 in 1..6 {
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:386:6
[INFO] [stdout]     |
[INFO] [stdout] 386 |         'inner_while: while c2 < 6 {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:417:7
[INFO] [stdout]     |
[INFO] [stdout] 417 |       'inner_loop: loop {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/basic_rust.rs:445:7
[INFO] [stdout]     |
[INFO] [stdout] 445 |       'inner_for: for c2 in 1..6 {
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/basic_rust.rs:469:13
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let mut a2: Vec<i32> = Vec::new();
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]    --> src/basic_rust.rs:470:13
[INFO] [stdout]     |
[INFO] [stdout] 470 |     let mut b2: Vec<i32> = vec![];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b3`
[INFO] [stdout]    --> src/basic_rust.rs:471:13
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut b3 = vec![1i32, 2, 3];//sufixing 1st value with data type
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b4`
[INFO] [stdout]    --> src/basic_rust.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |     let mut b4 = vec![1, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b5`
[INFO] [stdout]    --> src/basic_rust.rs:474:13
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut b5: Vec<i32> = vec![1, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b6`
[INFO] [stdout]    --> src/basic_rust.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut b6  = vec![1i32, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b7`
[INFO] [stdout]    --> src/basic_rust.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut b7 = vec![0; 10]; //ten zeroes
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/basic_rust.rs:469:9
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let mut a2: Vec<i32> = Vec::new();
[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/basic_rust.rs:470:9
[INFO] [stdout]     |
[INFO] [stdout] 470 |     let mut b2: Vec<i32> = vec![];
[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/basic_rust.rs:471:9
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut b3 = vec![1i32, 2, 3];//sufixing 1st value with data type
[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/basic_rust.rs:473:9
[INFO] [stdout]     |
[INFO] [stdout] 473 |     let mut b4 = vec![1, 2, 3];
[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/basic_rust.rs:474:9
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut b5: Vec<i32> = vec![1, 2, 3];
[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/basic_rust.rs:475:9
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut b6  = vec![1i32, 2, 3];
[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/basic_rust.rs:476:9
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut b7 = vec![0; 10]; //ten zeroes
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/basic_rust.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let x = MXU;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Monday`, `Tuesday`, `Wednesday`, `Thursday`, `Friday`, and `Saturday` are never constructed
[INFO] [stdout]    --> src/basic_rust.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 594 | enum Day {
[INFO] [stdout]     |      --- variants in this enum
[INFO] [stdout] 595 |     Sunday,
[INFO] [stdout] 596 |     Monday,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 597 |     Tuesday,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 598 |     Wednesday,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 599 |     Thursday,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 600 |     Friday,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 601 |     Saturday
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/basic_rust.rs:469:13
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let mut a2: Vec<i32> = Vec::new();
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]    --> src/basic_rust.rs:470:13
[INFO] [stdout]     |
[INFO] [stdout] 470 |     let mut b2: Vec<i32> = vec![];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b3`
[INFO] [stdout]    --> src/basic_rust.rs:471:13
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut b3 = vec![1i32, 2, 3];//sufixing 1st value with data type
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b4`
[INFO] [stdout]    --> src/basic_rust.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |     let mut b4 = vec![1, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b5`
[INFO] [stdout]    --> src/basic_rust.rs:474:13
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut b5: Vec<i32> = vec![1, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b6`
[INFO] [stdout]    --> src/basic_rust.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut b6  = vec![1i32, 2, 3];
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b7`
[INFO] [stdout]    --> src/basic_rust.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut b7 = vec![0; 10]; //ten zeroes
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/basic_rust.rs:469:9
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let mut a2: Vec<i32> = Vec::new();
[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/basic_rust.rs:470:9
[INFO] [stdout]     |
[INFO] [stdout] 470 |     let mut b2: Vec<i32> = vec![];
[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/basic_rust.rs:471:9
[INFO] [stdout]     |
[INFO] [stdout] 471 |     let mut b3 = vec![1i32, 2, 3];//sufixing 1st value with data type
[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/basic_rust.rs:473:9
[INFO] [stdout]     |
[INFO] [stdout] 473 |     let mut b4 = vec![1, 2, 3];
[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/basic_rust.rs:474:9
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut b5: Vec<i32> = vec![1, 2, 3];
[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/basic_rust.rs:475:9
[INFO] [stdout]     |
[INFO] [stdout] 475 |     let mut b6  = vec![1i32, 2, 3];
[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/basic_rust.rs:476:9
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut b7 = vec![0; 10]; //ten zeroes
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/basic_rust.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let x = MXU;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Monday`, `Tuesday`, `Wednesday`, `Thursday`, `Friday`, and `Saturday` are never constructed
[INFO] [stdout]    --> src/basic_rust.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 594 | enum Day {
[INFO] [stdout]     |      --- variants in this enum
[INFO] [stdout] 595 |     Sunday,
[INFO] [stdout] 596 |     Monday,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 597 |     Tuesday,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 598 |     Wednesday,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 599 |     Thursday,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 600 |     Friday,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 601 |     Saturday
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "20227fc6d62feff5c2bf5f415c61d76b9381f4c94299ae5c1610e4127223df3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20227fc6d62feff5c2bf5f415c61d76b9381f4c94299ae5c1610e4127223df3a", kill_on_drop: false }`
[INFO] [stdout] 20227fc6d62feff5c2bf5f415c61d76b9381f4c94299ae5c1610e4127223df3a
