[INFO] cloning repository https://github.com/magnetonerd/numbers-as-words2 [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/magnetonerd/numbers-as-words2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnetonerd%2Fnumbers-as-words2"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnetonerd%2Fnumbers-as-words2'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] d461f1de8d40caba27161eca65bc6bac067eb253 [INFO] testing magnetonerd/numbers-as-words2 against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnetonerd%2Fnumbers-as-words2" "/workspace/builds/worker-2/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/magnetonerd/numbers-as-words2 on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/magnetonerd/numbers-as-words2 [INFO] finished tweaking git repo https://github.com/magnetonerd/numbers-as-words2 [INFO] tweaked toml for git repo https://github.com/magnetonerd/numbers-as-words2 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/magnetonerd/numbers-as-words2 already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e06bf3b49a15246feb62499186cc854199a2284332d2c3871f329ba8a953545c [INFO] running `"docker" "start" "-a" "e06bf3b49a15246feb62499186cc854199a2284332d2c3871f329ba8a953545c"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling Euler v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:37:8 [INFO] [stderr] | [INFO] [stderr] 37 | if ((num < 100) && (num > 9)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:50:12 [INFO] [stderr] | [INFO] [stderr] 50 | if (num % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:61:8 [INFO] [stderr] | [INFO] [stderr] 61 | if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:78:12 [INFO] [stderr] | [INFO] [stderr] 78 | if ((newnum2 > 0) && (newnum2 < 20)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:82:12 [INFO] [stderr] | [INFO] [stderr] 82 | if ((newnum2 >= 20) && (newnum2 < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:95:15 [INFO] [stderr] | [INFO] [stderr] 95 | if(newnum2 % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:110:12 [INFO] [stderr] | [INFO] [stderr] 110 | if (num < 20){ [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:113:18 [INFO] [stderr] | [INFO] [stderr] 113 | }else if ((num >= 20) && (num < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:116:18 [INFO] [stderr] | [INFO] [stderr] 116 | }else if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:119:18 [INFO] [stderr] | [INFO] [stderr] 119 | }else if (num == 1000){ [INFO] [stderr] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:33:5 [INFO] [stderr] | [INFO] [stderr] 32 | return name; [INFO] [stderr] | ----------- any code following this expression is unreachable [INFO] [stderr] 33 | panic!("WHAT DID YOU DO!?"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:77:13 [INFO] [stderr] | [INFO] [stderr] 77 | let mut newnum2 = num - newnum1; [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: crate `Euler` should have a snake case name [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] = help: convert the identifier to snake case: `euler` [INFO] [stderr] [INFO] [stderr] warning: 15 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.77s [INFO] running `"docker" "inspect" "e06bf3b49a15246feb62499186cc854199a2284332d2c3871f329ba8a953545c"` [INFO] running `"docker" "rm" "-f" "e06bf3b49a15246feb62499186cc854199a2284332d2c3871f329ba8a953545c"` [INFO] [stdout] e06bf3b49a15246feb62499186cc854199a2284332d2c3871f329ba8a953545c [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"` [INFO] [stdout] e76c331ab7b1f0ed5729280e99547018b2ecee57ac4ec46cc5958c821aef76b9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "e76c331ab7b1f0ed5729280e99547018b2ecee57ac4ec46cc5958c821aef76b9"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling Euler v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:37:8 [INFO] [stderr] | [INFO] [stderr] 37 | if ((num < 100) && (num > 9)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:50:12 [INFO] [stderr] | [INFO] [stderr] 50 | if (num % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:61:8 [INFO] [stderr] | [INFO] [stderr] 61 | if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:78:12 [INFO] [stderr] | [INFO] [stderr] 78 | if ((newnum2 > 0) && (newnum2 < 20)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:82:12 [INFO] [stderr] | [INFO] [stderr] 82 | if ((newnum2 >= 20) && (newnum2 < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:95:15 [INFO] [stderr] | [INFO] [stderr] 95 | if(newnum2 % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:110:12 [INFO] [stderr] | [INFO] [stderr] 110 | if (num < 20){ [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:113:18 [INFO] [stderr] | [INFO] [stderr] 113 | }else if ((num >= 20) && (num < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:116:18 [INFO] [stderr] | [INFO] [stderr] 116 | }else if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:119:18 [INFO] [stderr] | [INFO] [stderr] 119 | }else if (num == 1000){ [INFO] [stderr] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:33:5 [INFO] [stderr] | [INFO] [stderr] 32 | return name; [INFO] [stderr] | ----------- any code following this expression is unreachable [INFO] [stderr] 33 | panic!("WHAT DID YOU DO!?"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:77:13 [INFO] [stderr] | [INFO] [stderr] 77 | let mut newnum2 = num - newnum1; [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: crate `Euler` should have a snake case name [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] = help: convert the identifier to snake case: `euler` [INFO] [stderr] [INFO] [stderr] warning: 15 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.66s [INFO] running `"docker" "inspect" "e76c331ab7b1f0ed5729280e99547018b2ecee57ac4ec46cc5958c821aef76b9"` [INFO] running `"docker" "rm" "-f" "e76c331ab7b1f0ed5729280e99547018b2ecee57ac4ec46cc5958c821aef76b9"` [INFO] [stdout] e76c331ab7b1f0ed5729280e99547018b2ecee57ac4ec46cc5958c821aef76b9 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 42585c81a19dc718f8386ab3b9df189ea117b1c703ed5bba4d4c208b35ad667d [INFO] running `"docker" "start" "-a" "42585c81a19dc718f8386ab3b9df189ea117b1c703ed5bba4d4c208b35ad667d"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:37:8 [INFO] [stderr] | [INFO] [stderr] 37 | if ((num < 100) && (num > 9)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:50:12 [INFO] [stderr] | [INFO] [stderr] 50 | if (num % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:61:8 [INFO] [stderr] | [INFO] [stderr] 61 | if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:78:12 [INFO] [stderr] | [INFO] [stderr] 78 | if ((newnum2 > 0) && (newnum2 < 20)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:82:12 [INFO] [stderr] | [INFO] [stderr] 82 | if ((newnum2 >= 20) && (newnum2 < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:95:15 [INFO] [stderr] | [INFO] [stderr] 95 | if(newnum2 % 10 > 0){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:110:12 [INFO] [stderr] | [INFO] [stderr] 110 | if (num < 20){ [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:113:18 [INFO] [stderr] | [INFO] [stderr] 113 | }else if ((num >= 20) && (num < 100)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:116:18 [INFO] [stderr] | [INFO] [stderr] 116 | }else if ((num >= 100) && (num < 1000)){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/main.rs:119:18 [INFO] [stderr] | [INFO] [stderr] 119 | }else if (num == 1000){ [INFO] [stderr] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:33:5 [INFO] [stderr] | [INFO] [stderr] 32 | return name; [INFO] [stderr] | ----------- any code following this expression is unreachable [INFO] [stderr] 33 | panic!("WHAT DID YOU DO!?"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:77:13 [INFO] [stderr] | [INFO] [stderr] 77 | let mut newnum2 = num - newnum1; [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:107:9 [INFO] [stderr] | [INFO] [stderr] 107 | let mut num = 0; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: crate `Euler` should have a snake case name [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] = help: convert the identifier to snake case: `euler` [INFO] [stderr] [INFO] [stderr] warning: 15 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/Euler-f7e60e85456dc00e [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "42585c81a19dc718f8386ab3b9df189ea117b1c703ed5bba4d4c208b35ad667d"` [INFO] running `"docker" "rm" "-f" "42585c81a19dc718f8386ab3b9df189ea117b1c703ed5bba4d4c208b35ad667d"` [INFO] [stdout] 42585c81a19dc718f8386ab3b9df189ea117b1c703ed5bba4d4c208b35ad667d