[INFO] cloning repository https://github.com/vintersnow/edit_distance.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vintersnow/edit_distance.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvintersnow%2Fedit_distance.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvintersnow%2Fedit_distance.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4a2914343119708430980c38346a214fdfe9d155 [INFO] checking vintersnow/edit_distance.rs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvintersnow%2Fedit_distance.rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vintersnow/edit_distance.rs on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/vintersnow/edit_distance.rs [INFO] finished tweaking git repo https://github.com/vintersnow/edit_distance.rs [INFO] tweaked toml for git repo https://github.com/vintersnow/edit_distance.rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/vintersnow/edit_distance.rs 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9b43587cd09399aa49da7ff193abac7ff63c606a7f1338d3b815498d1e0692f7 [INFO] running `Command { std: "docker" "start" "-a" "9b43587cd09399aa49da7ff193abac7ff63c606a7f1338d3b815498d1e0692f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9b43587cd09399aa49da7ff193abac7ff63c606a7f1338d3b815498d1e0692f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b43587cd09399aa49da7ff193abac7ff63c606a7f1338d3b815498d1e0692f7", kill_on_drop: false }` [INFO] [stdout] 9b43587cd09399aa49da7ff193abac7ff63c606a7f1338d3b815498d1e0692f7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b1de50a6f289080bfe6b2915f87bd39703f5f0cfd8d16b9bc0033899da2c4d03 [INFO] running `Command { std: "docker" "start" "-a" "b1de50a6f289080bfe6b2915f87bd39703f5f0cfd8d16b9bc0033899da2c4d03", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking getopts v0.2.17 [INFO] [stderr] Checking edit_distance v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:34:17 [INFO] [stdout] | [INFO] [stdout] 34 | let mut v: Vec = vec![0; s2.len()]; [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:34:17 [INFO] [stdout] | [INFO] [stdout] 34 | let mut v: Vec = vec![0; s2.len()]; [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: fields `input`, `insert`, `delete`, and `change` are never read [INFO] [stdout] --> src/main.rs:19:3 [INFO] [stdout] | [INFO] [stdout] 18 | struct Args { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 19 | input: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 20 | insert: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 21 | delete: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 22 | change: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:112:61 [INFO] [stdout] | [INFO] [stdout] 112 | 0 => {s2_idx+=1; ("+", (" ", self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:113:56 [INFO] [stdout] | [INFO] [stdout] 113 | 1 => {s1_idx+=1; ("-", (self.s1[s1_idx].clone(), " "))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:114:67 [INFO] [stdout] | [INFO] [stdout] 114 | 2 => {s1_idx+=1; s2_idx+=1; ("#", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:114:92 [INFO] [stdout] | [INFO] [stdout] 114 | 2 => {s1_idx+=1; s2_idx+=1; ("#", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:115:67 [INFO] [stdout] | [INFO] [stdout] 115 | _ => {s1_idx+=1; s2_idx+=1; ("=", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:115:92 [INFO] [stdout] | [INFO] [stdout] 115 | _ => {s1_idx+=1; s2_idx+=1; ("=", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:152:32 [INFO] [stdout] | [INFO] [stdout] 152 | .unwrap_or_else(|f| panic!(f.to_string())); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 152 | .unwrap_or_else(|f| panic!("{}", f.to_string())); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `input`, `insert`, `delete`, and `change` are never read [INFO] [stdout] --> src/main.rs:19:3 [INFO] [stdout] | [INFO] [stdout] 18 | struct Args { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 19 | input: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 20 | insert: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 21 | delete: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 22 | change: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:112:61 [INFO] [stdout] | [INFO] [stdout] 112 | 0 => {s2_idx+=1; ("+", (" ", self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:113:56 [INFO] [stdout] | [INFO] [stdout] 113 | 1 => {s1_idx+=1; ("-", (self.s1[s1_idx].clone(), " "))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:114:67 [INFO] [stdout] | [INFO] [stdout] 114 | 2 => {s1_idx+=1; s2_idx+=1; ("#", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:114:92 [INFO] [stdout] | [INFO] [stdout] 114 | 2 => {s1_idx+=1; s2_idx+=1; ("#", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:115:67 [INFO] [stdout] | [INFO] [stdout] 115 | _ => {s1_idx+=1; s2_idx+=1; ("=", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:115:92 [INFO] [stdout] | [INFO] [stdout] 115 | _ => {s1_idx+=1; s2_idx+=1; ("=", (self.s1[s1_idx].clone(), self.s2[s2_idx].clone()))}, [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:152:32 [INFO] [stdout] | [INFO] [stdout] 152 | .unwrap_or_else(|f| panic!(f.to_string())); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 152 | .unwrap_or_else(|f| panic!("{}", f.to_string())); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s [INFO] running `Command { std: "docker" "inspect" "b1de50a6f289080bfe6b2915f87bd39703f5f0cfd8d16b9bc0033899da2c4d03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1de50a6f289080bfe6b2915f87bd39703f5f0cfd8d16b9bc0033899da2c4d03", kill_on_drop: false }` [INFO] [stdout] b1de50a6f289080bfe6b2915f87bd39703f5f0cfd8d16b9bc0033899da2c4d03