[INFO] cloning repository https://github.com/stevekm/grep [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevekm/grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevekm%2Fgrep", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevekm%2Fgrep'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 83259a87ce17722b168c5d4b68e71fc355b01e4b [INFO] testing stevekm/grep against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevekm%2Fgrep" "/workspace/builds/worker-18/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/stevekm/grep on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/stevekm/grep [INFO] finished tweaking git repo https://github.com/stevekm/grep [INFO] tweaked toml for git repo https://github.com/stevekm/grep written to /workspace/builds/worker-18/source/Cargo.toml [INFO] crate git repo https://github.com/stevekm/grep already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ef05e71513d637594cb04d6c47aa7cbc74b26e2eb9c84ef948fea3409b8c58a4 [INFO] running `Command { std: "docker" "start" "-a" "ef05e71513d637594cb04d6c47aa7cbc74b26e2eb9c84ef948fea3409b8c58a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ef05e71513d637594cb04d6c47aa7cbc74b26e2eb9c84ef948fea3409b8c58a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef05e71513d637594cb04d6c47aa7cbc74b26e2eb9c84ef948fea3409b8c58a4", kill_on_drop: false }` [INFO] [stdout] ef05e71513d637594cb04d6c47aa7cbc74b26e2eb9c84ef948fea3409b8c58a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2d8232593e55088452d5c79855d5f0ddebbece5a8ec8c33e392c94e0b822d2b5 [INFO] running `Command { std: "docker" "start" "-a" "2d8232593e55088452d5c79855d5f0ddebbece5a8ec8c33e392c94e0b822d2b5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling unicode-width v0.1.5 [INFO] [stderr] Compiling either v1.5.2 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling itertools v0.8.0 [INFO] [stderr] Compiling atty v0.2.13 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling grep v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:20:26 [INFO] [stdout] | [INFO] [stdout] 20 | fn get(&self) -> Box { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 20 - fn get(&self) -> Box { [INFO] [stdout] 20 + fn get(&self) -> Box { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/main.rs:149:10 [INFO] [stdout] | [INFO] [stdout] 149 | Ok(n) => { return Ok(()); }, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:150:11 [INFO] [stdout] | [INFO] [stdout] 150 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let mut before = Vec::with_capacity(before_size); [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: function is never used: `match_lines` [INFO] [stdout] --> src/main.rs:131:4 [INFO] [stdout] | [INFO] [stdout] 131 | fn match_lines(reader: &Reader, writer: &Writer, pattern: &str){ [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | writeln!(write_handle, "{}", "--"); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | writeln!(write_handle, "{}", item); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:80:21 [INFO] [stdout] | [INFO] [stdout] 80 | / match peek_res { [INFO] [stdout] 81 | | Ok(peek_val) => writeln!(write_handle, "{}", peek_val), [INFO] [stdout] 82 | | Err(e) => writeln!(write_handle, "error peek value line: {:?}", e), [INFO] [stdout] 83 | | }; [INFO] [stdout] | |______________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | writeln!(write_handle, "{}", "--"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:113:29 [INFO] [stdout] | [INFO] [stdout] 113 | ... writeln!(write_handle, "{}", l_val); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:138:21 [INFO] [stdout] | [INFO] [stdout] 138 | writeln!(write_handle, "{}", l); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `inputFile` should have a snake case name [INFO] [stdout] --> src/main.rs:187:9 [INFO] [stdout] | [INFO] [stdout] 187 | let inputFile = matches.value_of("inputFile").unwrap(); [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `input_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `outputFile` should have a snake case name [INFO] [stdout] --> src/main.rs:188:9 [INFO] [stdout] | [INFO] [stdout] 188 | let outputFile = matches.value_of("outputFile").unwrap(); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `output_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.49s [INFO] running `Command { std: "docker" "inspect" "2d8232593e55088452d5c79855d5f0ddebbece5a8ec8c33e392c94e0b822d2b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d8232593e55088452d5c79855d5f0ddebbece5a8ec8c33e392c94e0b822d2b5", kill_on_drop: false }` [INFO] [stdout] 2d8232593e55088452d5c79855d5f0ddebbece5a8ec8c33e392c94e0b822d2b5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5f71a33b86a493c0cef27131fca739b25f393a3fab230c8dba07c9ebdc059947 [INFO] running `Command { std: "docker" "start" "-a" "5f71a33b86a493c0cef27131fca739b25f393a3fab230c8dba07c9ebdc059947", kill_on_drop: false }` [INFO] [stderr] Compiling grep v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:20:26 [INFO] [stdout] | [INFO] [stdout] 20 | fn get(&self) -> Box { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 20 - fn get(&self) -> Box { [INFO] [stdout] 20 + fn get(&self) -> Box { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/main.rs:149:10 [INFO] [stdout] | [INFO] [stdout] 149 | Ok(n) => { return Ok(()); }, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:150:11 [INFO] [stdout] | [INFO] [stdout] 150 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let mut before = Vec::with_capacity(before_size); [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: function is never used: `match_lines` [INFO] [stdout] --> src/main.rs:131:4 [INFO] [stdout] | [INFO] [stdout] 131 | fn match_lines(reader: &Reader, writer: &Writer, pattern: &str){ [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | writeln!(write_handle, "{}", "--"); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | writeln!(write_handle, "{}", item); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:80:21 [INFO] [stdout] | [INFO] [stdout] 80 | / match peek_res { [INFO] [stdout] 81 | | Ok(peek_val) => writeln!(write_handle, "{}", peek_val), [INFO] [stdout] 82 | | Err(e) => writeln!(write_handle, "error peek value line: {:?}", e), [INFO] [stdout] 83 | | }; [INFO] [stdout] | |______________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | writeln!(write_handle, "{}", "--"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:113:29 [INFO] [stdout] | [INFO] [stdout] 113 | ... writeln!(write_handle, "{}", l_val); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:138:21 [INFO] [stdout] | [INFO] [stdout] 138 | writeln!(write_handle, "{}", l); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `inputFile` should have a snake case name [INFO] [stdout] --> src/main.rs:187:9 [INFO] [stdout] | [INFO] [stdout] 187 | let inputFile = matches.value_of("inputFile").unwrap(); [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `input_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `outputFile` should have a snake case name [INFO] [stdout] --> src/main.rs:188:9 [INFO] [stdout] | [INFO] [stdout] 188 | let outputFile = matches.value_of("outputFile").unwrap(); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `output_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.72s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/grep-665dcb25c7582ac5) [INFO] running `Command { std: "docker" "inspect" "5f71a33b86a493c0cef27131fca739b25f393a3fab230c8dba07c9ebdc059947", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f71a33b86a493c0cef27131fca739b25f393a3fab230c8dba07c9ebdc059947", kill_on_drop: false }` [INFO] [stdout] 5f71a33b86a493c0cef27131fca739b25f393a3fab230c8dba07c9ebdc059947 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 2a3c255e32b943990501b7225f1477db918169ae8b24e094593da547dd30374b [INFO] running `Command { std: "docker" "start" "-a" "2a3c255e32b943990501b7225f1477db918169ae8b24e094593da547dd30374b", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:20:26 [INFO] [stderr] | [INFO] [stderr] 20 | fn get(&self) -> Box { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 20 - fn get(&self) -> Box { [INFO] [stderr] 20 + fn get(&self) -> Box { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/main.rs:149:10 [INFO] [stderr] | [INFO] [stderr] 149 | Ok(n) => { return Ok(()); }, [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:150:11 [INFO] [stderr] | [INFO] [stderr] 150 | Err(e) => { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:96:9 [INFO] [stderr] | [INFO] [stderr] 96 | let mut before = Vec::with_capacity(before_size); [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: function is never used: `match_lines` [INFO] [stderr] --> src/main.rs:131:4 [INFO] [stderr] | [INFO] [stderr] 131 | fn match_lines(reader: &Reader, writer: &Writer, pattern: &str){ [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | writeln!(write_handle, "{}", "--"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | writeln!(write_handle, "{}", item); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:80:21 [INFO] [stderr] | [INFO] [stderr] 80 | / match peek_res { [INFO] [stderr] 81 | | Ok(peek_val) => writeln!(write_handle, "{}", peek_val), [INFO] [stderr] 82 | | Err(e) => writeln!(write_handle, "error peek value line: {:?}", e), [INFO] [stderr] 83 | | }; [INFO] [stderr] | |______________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | writeln!(write_handle, "{}", "--"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:113:29 [INFO] [stderr] | [INFO] [stderr] 113 | ... writeln!(write_handle, "{}", l_val); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:138:21 [INFO] [stderr] | [INFO] [stderr] 138 | writeln!(write_handle, "{}", l); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variable `inputFile` should have a snake case name [INFO] [stderr] --> src/main.rs:187:9 [INFO] [stderr] | [INFO] [stderr] 187 | let inputFile = matches.value_of("inputFile").unwrap(); [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `input_file` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `outputFile` should have a snake case name [INFO] [stderr] --> src/main.rs:188:9 [INFO] [stderr] | [INFO] [stderr] 188 | let outputFile = matches.value_of("outputFile").unwrap(); [INFO] [stderr] | ^^^^^^^^^^ help: convert the identifier to snake case: `output_file` [INFO] [stderr] [INFO] [stderr] warning: `grep` (bin "grep" test) generated 13 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grep-665dcb25c7582ac5) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::test_pattern_match1 ... ok [INFO] [stdout] test tests::test_pattern_match2 ... ok [INFO] [stdout] test tests::demo ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2a3c255e32b943990501b7225f1477db918169ae8b24e094593da547dd30374b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a3c255e32b943990501b7225f1477db918169ae8b24e094593da547dd30374b", kill_on_drop: false }` [INFO] [stdout] 2a3c255e32b943990501b7225f1477db918169ae8b24e094593da547dd30374b