[INFO] cloning repository https://github.com/topazus/head-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/topazus/head-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 72a5e54655e37028b384063e116cc2097eee5ed3 [INFO] checking topazus/head-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/topazus/head-rs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/topazus/head-rs [INFO] finished tweaking git repo https://github.com/topazus/head-rs [INFO] tweaked toml for git repo https://github.com/topazus/head-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/topazus/head-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e79f6de142603c1491791b94e83925217ca49445700112cb8ac91d7845c62dab [INFO] running `Command { std: "docker" "start" "-a" "e79f6de142603c1491791b94e83925217ca49445700112cb8ac91d7845c62dab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e79f6de142603c1491791b94e83925217ca49445700112cb8ac91d7845c62dab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e79f6de142603c1491791b94e83925217ca49445700112cb8ac91d7845c62dab", kill_on_drop: false }` [INFO] [stdout] e79f6de142603c1491791b94e83925217ca49445700112cb8ac91d7845c62dab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 84c65d7c75a267aba4118ebed1dceacf9448279c18db0a6dd0295d993cf713e1 [INFO] running `Command { std: "docker" "start" "-a" "84c65d7c75a267aba4118ebed1dceacf9448279c18db0a6dd0295d993cf713e1", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling libc v0.2.124 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Checking os_str_bytes v6.0.0 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Checking strsim v0.10.0 [INFO] [stderr] Checking predicates-core v1.0.3 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking difflib v0.4.0 [INFO] [stderr] Checking ppv-lite86 v0.2.16 [INFO] [stderr] Checking termtree v0.2.4 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking normalize-line-endings v0.3.0 [INFO] [stderr] Checking itertools v0.10.3 [INFO] [stderr] Checking predicates-tree v1.0.5 [INFO] [stderr] Checking clap_lex v0.1.1 [INFO] [stderr] Compiling indexmap v1.8.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking clap v3.1.12 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking float-cmp v0.9.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex v1.5.5 [INFO] [stderr] Checking predicates v2.1.1 [INFO] [stderr] Checking headr v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `files_str` [INFO] [stdout] --> src/lib.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let files_str = matches.values_of("files").unwrap().collect::>(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `files_string` [INFO] [stdout] --> src/lib.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let files_string = matches [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:216:9 [INFO] [stdout] | [INFO] [stdout] 216 | let mut file = std::fs::File::open("Cargo.toml").unwrap(); [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: unused variable: `bytes_read` [INFO] [stdout] --> src/lib.rs:226:9 [INFO] [stdout] | [INFO] [stdout] 226 | let bytes_read = file.read_to_string(&mut contents).unwrap(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/lib.rs:232:13 [INFO] [stdout] | [INFO] [stdout] 232 | let mut buf = String::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:231:9 [INFO] [stdout] | [INFO] [stdout] 231 | let mut file = std::fs::File::open("Cargo.toml").unwrap(); [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/lib.rs:232:9 [INFO] [stdout] | [INFO] [stdout] 232 | let mut buf = String::new(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parse_args` is never used [INFO] [stdout] --> src/lib.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn parse_args() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_lines_file` is never used [INFO] [stdout] --> src/lib.rs:173:4 [INFO] [stdout] | [INFO] [stdout] 173 | fn read_lines_file(file_name: &str) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_lines_file2` is never used [INFO] [stdout] --> src/lib.rs:183:4 [INFO] [stdout] | [INFO] [stdout] 183 | fn read_lines_file2(file_name: &str) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file` is never used [INFO] [stdout] --> src/lib.rs:215:4 [INFO] [stdout] | [INFO] [stdout] 215 | fn read_bytes_from_file(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file2` is never used [INFO] [stdout] --> src/lib.rs:223:4 [INFO] [stdout] | [INFO] [stdout] 223 | fn read_bytes_from_file2(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file3` is never used [INFO] [stdout] --> src/lib.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn read_bytes_from_file3(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parse_positive_int2` is never used [INFO] [stdout] --> src/lib.rs:264:4 [INFO] [stdout] | [INFO] [stdout] 264 | fn parse_positive_int2(val: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parse_positive_int3` is never used [INFO] [stdout] --> src/lib.rs:270:4 [INFO] [stdout] | [INFO] [stdout] 270 | fn parse_positive_int3(val: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking assert_cmd v2.0.4 [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> tests/cli.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use rand; [INFO] [stdout] | ^^^^ the item `rand` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `files_str` [INFO] [stdout] --> src/lib.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let files_str = matches.values_of("files").unwrap().collect::>(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `files_string` [INFO] [stdout] --> src/lib.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let files_string = matches [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:216:9 [INFO] [stdout] | [INFO] [stdout] 216 | let mut file = std::fs::File::open("Cargo.toml").unwrap(); [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: unused variable: `bytes_read` [INFO] [stdout] --> src/lib.rs:226:9 [INFO] [stdout] | [INFO] [stdout] 226 | let bytes_read = file.read_to_string(&mut contents).unwrap(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/lib.rs:232:13 [INFO] [stdout] | [INFO] [stdout] 232 | let mut buf = String::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:231:9 [INFO] [stdout] | [INFO] [stdout] 231 | let mut file = std::fs::File::open("Cargo.toml").unwrap(); [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/lib.rs:232:9 [INFO] [stdout] | [INFO] [stdout] 232 | let mut buf = String::new(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parse_args` is never used [INFO] [stdout] --> src/lib.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn parse_args() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file` is never used [INFO] [stdout] --> src/lib.rs:215:4 [INFO] [stdout] | [INFO] [stdout] 215 | fn read_bytes_from_file(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file2` is never used [INFO] [stdout] --> src/lib.rs:223:4 [INFO] [stdout] | [INFO] [stdout] 223 | fn read_bytes_from_file2(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_bytes_from_file3` is never used [INFO] [stdout] --> src/lib.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn read_bytes_from_file3(bytes: usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.58s [INFO] running `Command { std: "docker" "inspect" "84c65d7c75a267aba4118ebed1dceacf9448279c18db0a6dd0295d993cf713e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "84c65d7c75a267aba4118ebed1dceacf9448279c18db0a6dd0295d993cf713e1", kill_on_drop: false }` [INFO] [stdout] 84c65d7c75a267aba4118ebed1dceacf9448279c18db0a6dd0295d993cf713e1