[INFO] fetching crate parallel 0.11.3...
[INFO] testing parallel-0.11.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate parallel 0.11.3 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate parallel 0.11.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parallel 0.11.3
[INFO] finished tweaking crates.io crate parallel 0.11.3
[INFO] tweaked toml for crates.io crate parallel 0.11.3 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 833c0d42044a8e77ca8a3033de631dcf990fe1f88a2e92afc754e2c23d515e7e
[INFO] running `Command { std: "docker" "start" "-a" "833c0d42044a8e77ca8a3033de631dcf990fe1f88a2e92afc754e2c23d515e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "833c0d42044a8e77ca8a3033de631dcf990fe1f88a2e92afc754e2c23d515e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "833c0d42044a8e77ca8a3033de631dcf990fe1f88a2e92afc754e2c23d515e7e", kill_on_drop: false }`
[INFO] [stdout] 833c0d42044a8e77ca8a3033de631dcf990fe1f88a2e92afc754e2c23d515e7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e56aaae280af81b8cb497f5779fa26479d552f86c1570c21be11e547511d84d6
[INFO] running `Command { std: "docker" "start" "-a" "e56aaae280af81b8cb497f5779fa26479d552f86c1570c21be11e547511d84d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling odds v0.2.26
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling numtoa v0.0.7
[INFO] [stderr]    Compiling permutate v0.3.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling wait-timeout v0.1.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling arrayvec v0.3.25
[INFO] [stderr]    Compiling sys-info v0.4.1
[INFO] [stderr]    Compiling parallel v0.11.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `cyclomatic_complexity`
[INFO] [stdout]   --> src/execute/receive.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 | #[allow(cyclomatic_complexity)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arguments/mod.rs:378:25
[INFO] [stdout]     |
[INFO] [stdout] 378 |     let parse_line: Box<Fn(io::Result<String>) -> io::Result<String>> =
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(io::Result<String>) -> io::Result<String>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/execute/dry.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let pipe_action: Box<Fn(&mut StdoutLock, &str)> = if flags & arguments::SHELL_QUOTE != 0 {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdoutLock, &str)`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/input_iterator/lock.rs:22:62
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn try_next(&mut self, input: &mut String) -> Option<(usize)> {
[INFO] [stdout]    |                                                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 242 |         /// Prints messages from executed commands in the correct order.
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 243 |         let errors = execute::receive_messages(input_rx, args, &base_path, &processed_path, &errors_path);
[INFO] [stdout]     |         -------------------------------------------------------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         /// Wait for all threads to exit before proceeding.
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 246 |         for thread in threads { thread.join().unwrap(); }
[INFO] [stdout]     |         ------------------------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/arguments/mod.rs:553:9
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let mut append_list = &mut Vec::new();
[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/execute/exec_commands.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut command_buffer = &mut String::with_capacity(64);
[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/execute/pipe.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.34s
[INFO] running `Command { std: "docker" "inspect" "e56aaae280af81b8cb497f5779fa26479d552f86c1570c21be11e547511d84d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56aaae280af81b8cb497f5779fa26479d552f86c1570c21be11e547511d84d6", kill_on_drop: false }`
[INFO] [stdout] e56aaae280af81b8cb497f5779fa26479d552f86c1570c21be11e547511d84d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea7e332b6b9de572fc110b2fad59c953a845ff18b0c12ed2961f35bcd7916be4
[INFO] running `Command { std: "docker" "start" "-a" "ea7e332b6b9de572fc110b2fad59c953a845ff18b0c12ed2961f35bcd7916be4", kill_on_drop: false }`
[INFO] [stderr]    Compiling parallel v0.11.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `cyclomatic_complexity`
[INFO] [stdout]   --> src/execute/receive.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 | #[allow(cyclomatic_complexity)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arguments/mod.rs:378:25
[INFO] [stdout]     |
[INFO] [stdout] 378 |     let parse_line: Box<Fn(io::Result<String>) -> io::Result<String>> =
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(io::Result<String>) -> io::Result<String>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/execute/dry.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let pipe_action: Box<Fn(&mut StdoutLock, &str)> = if flags & arguments::SHELL_QUOTE != 0 {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdoutLock, &str)`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/input_iterator/lock.rs:22:62
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn try_next(&mut self, input: &mut String) -> Option<(usize)> {
[INFO] [stdout]    |                                                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/input_iterator/iterator.rs:231:48
[INFO] [stdout]     |
[INFO] [stdout] 231 |         for (actual, expected) in iterator.zip((1..4096)) {
[INFO] [stdout]     |                                                ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 242 |         /// Prints messages from executed commands in the correct order.
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 243 |         let errors = execute::receive_messages(input_rx, args, &base_path, &processed_path, &errors_path);
[INFO] [stdout]     |         -------------------------------------------------------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         /// Wait for all threads to exit before proceeding.
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 246 |         for thread in threads { thread.join().unwrap(); }
[INFO] [stdout]     |         ------------------------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/arguments/mod.rs:553:9
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let mut append_list = &mut Vec::new();
[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/execute/exec_commands.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut command_buffer = &mut String::with_capacity(64);
[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/execute/pipe.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "ea7e332b6b9de572fc110b2fad59c953a845ff18b0c12ed2961f35bcd7916be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea7e332b6b9de572fc110b2fad59c953a845ff18b0c12ed2961f35bcd7916be4", kill_on_drop: false }`
[INFO] [stdout] ea7e332b6b9de572fc110b2fad59c953a845ff18b0c12ed2961f35bcd7916be4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6552fde2a59bfd75067b8ff1da1b5e6e86b3dd4bb649e0cf6d1bba87b82c4c35
[INFO] running `Command { std: "docker" "start" "-a" "6552fde2a59bfd75067b8ff1da1b5e6e86b3dd4bb649e0cf6d1bba87b82c4c35", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unknown lint: `cyclomatic_complexity`
[INFO] [stderr]   --> src/execute/receive.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | #[allow(cyclomatic_complexity)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arguments/mod.rs:378:25
[INFO] [stderr]     |
[INFO] [stderr] 378 |     let parse_line: Box<Fn(io::Result<String>) -> io::Result<String>> =
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(io::Result<String>) -> io::Result<String>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/execute/dry.rs:26:26
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let pipe_action: Box<Fn(&mut StdoutLock, &str)> = if flags & arguments::SHELL_QUOTE != 0 {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdoutLock, &str)`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/input_iterator/lock.rs:22:62
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn try_next(&mut self, input: &mut String) -> Option<(usize)> {
[INFO] [stderr]    |                                                              ^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/input_iterator/iterator.rs:231:48
[INFO] [stderr]     |
[INFO] [stderr] 231 |         for (actual, expected) in iterator.zip((1..4096)) {
[INFO] [stderr]     |                                                ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         /// Prints messages from executed commands in the correct order.
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 243 |         let errors = execute::receive_messages(input_rx, args, &base_path, &processed_path, &errors_path);
[INFO] [stderr]     |         -------------------------------------------------------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |         /// Wait for all threads to exit before proceeding.
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 246 |         for thread in threads { thread.join().unwrap(); }
[INFO] [stderr]     |         ------------------------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/arguments/mod.rs:553:9
[INFO] [stderr]     |
[INFO] [stderr] 553 |     let mut append_list = &mut Vec::new();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/execute/exec_commands.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/execute/pipe.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
[INFO] [stderr]    |                 ----^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel-3770e2f27fd8e776)
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test disk_buffer::tests::test_disk_buffer_reader_byte_shifting ... ok
[INFO] [stdout] test execute::argument_splitter::tests::methods ... ok
[INFO] [stdout] test execute::argument_splitter::tests::quotes ... ok
[INFO] [stdout] test disk_buffer::tests::test_disk_buffer_reader_simple ... ok
[INFO] [stdout] test execute::argument_splitter::tests::arrays ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_basename_dir ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_basename_empty ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_dirname_dir ... ok
[INFO] [stdout] test arguments::jobs::job_parsing ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_hidden ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_remove_ext_dir ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_remove_ext_empty ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_basename_utf8 ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_dirname_empty ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_dirname_utf8 ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_basename_simple ... ok
[INFO] [stdout] test execute::argument_splitter::tests::processes ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_remove_ext_utf8 ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_remove_ext_simple ... ok
[INFO] [stdout] test tokenizer::functions::tests::path_dirname_simple ... ok
[INFO] [stdout] test input_iterator::iterator::tests::test_input_iterator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6552fde2a59bfd75067b8ff1da1b5e6e86b3dd4bb649e0cf6d1bba87b82c4c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6552fde2a59bfd75067b8ff1da1b5e6e86b3dd4bb649e0cf6d1bba87b82c4c35", kill_on_drop: false }`
[INFO] [stdout] 6552fde2a59bfd75067b8ff1da1b5e6e86b3dd4bb649e0cf6d1bba87b82c4c35
