[INFO] cloning repository https://github.com/wismer/caesar-cipher [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wismer/caesar-cipher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwismer%2Fcaesar-cipher", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwismer%2Fcaesar-cipher'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cda2f26c1e779c0c72a97c4388eab53d6fb84041 [INFO] checking wismer/caesar-cipher against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwismer%2Fcaesar-cipher" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wismer/caesar-cipher on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/wismer/caesar-cipher [INFO] finished tweaking git repo https://github.com/wismer/caesar-cipher [INFO] tweaked toml for git repo https://github.com/wismer/caesar-cipher written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/wismer/caesar-cipher already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8743dfd3f7aa9bea6b7144d2397dccfb49ba6a0fe5fd7c4f28c0065e3542f267 [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" "8743dfd3f7aa9bea6b7144d2397dccfb49ba6a0fe5fd7c4f28c0065e3542f267", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8743dfd3f7aa9bea6b7144d2397dccfb49ba6a0fe5fd7c4f28c0065e3542f267", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8743dfd3f7aa9bea6b7144d2397dccfb49ba6a0fe5fd7c4f28c0065e3542f267", kill_on_drop: false }` [INFO] [stdout] 8743dfd3f7aa9bea6b7144d2397dccfb49ba6a0fe5fd7c4f28c0065e3542f267 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTUP_TOOLCHAIN=3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c0c48594c4cdf4d3cec67cd227509bb84033af67b344b68e03ce6d0274ca0593 [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" "c0c48594c4cdf4d3cec67cd227509bb84033af67b344b68e03ce6d0274ca0593", kill_on_drop: false }` [INFO] [stderr] Checking caesar-cipher v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/euler/euler.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remainder` [INFO] [stdout] --> src/euler/euler.rs:40:24 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder` [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/euler/euler.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut total_number = 0u64; [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/euler/euler.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut remainder_val = numbers.iter().fold(0, |acc, &c| { [INFO] [stdout] | ----^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Neither` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Neither [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `calculate_remainder` [INFO] [stdout] --> src/euler/euler.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `line_total` [INFO] [stdout] --> src/euler/euler.rs:44:4 [INFO] [stdout] | [INFO] [stdout] 44 | fn line_total(line: &str) -> u64 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/euler/euler.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | file.read_to_string(&mut contents); [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: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/euler/euler.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remainder` [INFO] [stdout] --> src/euler/euler.rs:40:24 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder` [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/euler/euler.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut total_number = 0u64; [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/euler/euler.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut remainder_val = numbers.iter().fold(0, |acc, &c| { [INFO] [stdout] | ----^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Neither` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Neither [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `calculate_remainder` [INFO] [stdout] --> src/euler/euler.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_remainder(remainder: &mut i32) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `line_total` [INFO] [stdout] --> src/euler/euler.rs:44:4 [INFO] [stdout] | [INFO] [stdout] 44 | fn line_total(line: &str) -> u64 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/euler/euler.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | file.read_to_string(&mut contents); [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: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.68s [INFO] running `Command { std: "docker" "inspect" "c0c48594c4cdf4d3cec67cd227509bb84033af67b344b68e03ce6d0274ca0593", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0c48594c4cdf4d3cec67cd227509bb84033af67b344b68e03ce6d0274ca0593", kill_on_drop: false }` [INFO] [stdout] c0c48594c4cdf4d3cec67cd227509bb84033af67b344b68e03ce6d0274ca0593