[INFO] cloning repository https://github.com/stevekm/grep [INFO] running `"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"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevekm%2Fgrep'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 83259a87ce17722b168c5d4b68e71fc355b01e4b [INFO] checking stevekm/grep against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevekm%2Fgrep" "/workspace/builds/worker-10/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/stevekm/grep on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [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-10/source/Cargo.toml [INFO] crate git repo https://github.com/stevekm/grep already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 94d80c13d65187087e4ac04251f8014a71ae0fe1f7eb78d0c0983947700b30fd [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" "94d80c13d65187087e4ac04251f8014a71ae0fe1f7eb78d0c0983947700b30fd"` [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking grep v0.1.0 (/opt/rustwide/workdir) [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] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [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] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [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: 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: 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: unused `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (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: 13 warnings emitted [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 `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::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 a macro (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: 13 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.26s [INFO] running `"docker" "inspect" "94d80c13d65187087e4ac04251f8014a71ae0fe1f7eb78d0c0983947700b30fd"` [INFO] running `"docker" "rm" "-f" "94d80c13d65187087e4ac04251f8014a71ae0fe1f7eb78d0c0983947700b30fd"` [INFO] [stdout] 94d80c13d65187087e4ac04251f8014a71ae0fe1f7eb78d0c0983947700b30fd