[INFO] fetching crate exec-rs 0.1.2...
[INFO] testing exec-rs-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate exec-rs 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate exec-rs 0.1.2
[INFO] finished tweaking crates.io crate exec-rs 0.1.2
[INFO] tweaked toml for crates.io crate exec-rs 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate exec-rs 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding flurry v0.3.1 (available: v0.5.2)
[INFO] [stderr]       Adding parking_lot v0.11.2 (available: v0.12.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot v0.10.2
[INFO] [stderr]   Downloaded parking_lot_core v0.7.3
[INFO] [stderr]   Downloaded flurry v0.3.1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7e34ce7b8ef8a75d8c343ba224f20c4478e86967b09463770533e4d187985be
[INFO] running `Command { std: "docker" "start" "-a" "f7e34ce7b8ef8a75d8c343ba224f20c4478e86967b09463770533e4d187985be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7e34ce7b8ef8a75d8c343ba224f20c4478e86967b09463770533e4d187985be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7e34ce7b8ef8a75d8c343ba224f20c4478e86967b09463770533e4d187985be", kill_on_drop: false }`
[INFO] [stdout] f7e34ce7b8ef8a75d8c343ba224f20c4478e86967b09463770533e4d187985be
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9aab90bba577bbd3c2395d67444a4ea27f676f779847b57896ddab60e8592856
[INFO] running `Command { std: "docker" "start" "-a" "9aab90bba577bbd3c2395d67444a4ea27f676f779847b57896ddab60e8592856", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling parking_lot_core v0.7.3
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling flurry v0.3.1
[INFO] [stderr]    Compiling exec-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout]     |                   ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 235 -         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout] 235 +         task: Box<dyn FnOnce() -> T + 'f >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:236:14
[INFO] [stdout]     |
[INFO] [stdout] 236 |     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout]     |              ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 236 -     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout] 236 +     ) -> Box<dyn FnOnce() -> T + 'f > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "9aab90bba577bbd3c2395d67444a4ea27f676f779847b57896ddab60e8592856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aab90bba577bbd3c2395d67444a4ea27f676f779847b57896ddab60e8592856", kill_on_drop: false }`
[INFO] [stdout] 9aab90bba577bbd3c2395d67444a4ea27f676f779847b57896ddab60e8592856
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d0c0e5730cf7edd50994a92b17ef3c4ff87703c6d3acd9cd4f74158d7653093
[INFO] running `Command { std: "docker" "start" "-a" "8d0c0e5730cf7edd50994a92b17ef3c4ff87703c6d3acd9cd4f74158d7653093", kill_on_drop: false }`
[INFO] [stderr]    Compiling exec-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout]     |                   ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 235 -         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout] 235 +         task: Box<dyn FnOnce() -> T + 'f >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:236:14
[INFO] [stdout]     |
[INFO] [stdout] 236 |     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout]     |              ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 236 -     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout] 236 +     ) -> Box<dyn FnOnce() -> T + 'f > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout]     |                   ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 235 -         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stdout] 235 +         task: Box<dyn FnOnce() -> T + 'f >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/sync.rs:236:14
[INFO] [stdout]     |
[INFO] [stdout] 236 |     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout]     |              ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 236 -     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stdout] 236 +     ) -> Box<dyn FnOnce() -> T + 'f > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:396:23
[INFO] [stdout]     |
[INFO] [stdout] 396 |             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stdout]     |                       ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 396 -             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stdout] 396 +             task: Box<dyn FnOnce() -> i32 + 'f >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:397:18
[INFO] [stdout]     |
[INFO] [stdout] 397 |         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stdout]     |                  ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 397 -         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stdout] 397 +         ) -> Box<dyn FnOnce() -> i32 + 'f > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:408:23
[INFO] [stdout]     |
[INFO] [stdout] 408 |             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stdout]     |                       ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 408 -             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stdout] 408 +             task: Box<dyn FnOnce() -> i32 + 'f >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:409:18
[INFO] [stdout]     |
[INFO] [stdout] 409 |         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stdout]     |                  ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 409 -         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stdout] 409 +         ) -> Box<dyn FnOnce() -> i32 + 'f > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:446:23
[INFO] [stdout]     |
[INFO] [stdout] 446 |             task: Box<(dyn FnOnce() -> &'a str + 'a)>,
[INFO] [stdout]     |                       ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 446 -             task: Box<(dyn FnOnce() -> &'a str + 'a)>,
[INFO] [stdout] 446 +             task: Box<dyn FnOnce() -> &'a str + 'a >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:447:18
[INFO] [stdout]     |
[INFO] [stdout] 447 |         ) -> Box<(dyn FnOnce() -> &'a str + 'a)> {
[INFO] [stdout]     |                  ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 447 -         ) -> Box<(dyn FnOnce() -> &'a str + 'a)> {
[INFO] [stdout] 447 +         ) -> Box<dyn FnOnce() -> &'a str + 'a > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:599:27
[INFO] [stdout]     |
[INFO] [stdout] 599 |                 task: Box<(dyn FnOnce() -> u16)>,
[INFO] [stdout]     |                           ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 599 -                 task: Box<(dyn FnOnce() -> u16)>,
[INFO] [stdout] 599 +                 task: Box<dyn FnOnce() -> u16 >,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:600:22
[INFO] [stdout]     |
[INFO] [stdout] 600 |             ) -> Box<(dyn FnOnce() -> u16)> {
[INFO] [stdout]     |                      ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 600 -             ) -> Box<(dyn FnOnce() -> u16)> {
[INFO] [stdout] 600 +             ) -> Box<dyn FnOnce() -> u16 > {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "8d0c0e5730cf7edd50994a92b17ef3c4ff87703c6d3acd9cd4f74158d7653093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d0c0e5730cf7edd50994a92b17ef3c4ff87703c6d3acd9cd4f74158d7653093", kill_on_drop: false }`
[INFO] [stdout] 8d0c0e5730cf7edd50994a92b17ef3c4ff87703c6d3acd9cd4f74158d7653093
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1529e22d57c0b4ba5dc09ce9718b85beca2bd53589ad7f5ba187f1519578729c
[INFO] running `Command { std: "docker" "start" "-a" "1529e22d57c0b4ba5dc09ce9718b85beca2bd53589ad7f5ba187f1519578729c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/sync.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stderr]     |                   ^                      ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 235 -         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stderr] 235 +         task: Box<dyn FnOnce() -> T + 'f >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/sync.rs:236:14
[INFO] [stderr]     |
[INFO] [stderr] 236 |     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stderr]     |              ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 236 -     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stderr] 236 +     ) -> Box<dyn FnOnce() -> T + 'f > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:396:23
[INFO] [stderr]     |
[INFO] [stderr] 396 |             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stderr]     |                       ^                        ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 396 -             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stderr] 396 +             task: Box<dyn FnOnce() -> i32 + 'f >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:397:18
[INFO] [stderr]     |
[INFO] [stderr] 397 |         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stderr]     |                  ^                        ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 397 -         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stderr] 397 +         ) -> Box<dyn FnOnce() -> i32 + 'f > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:408:23
[INFO] [stderr]     |
[INFO] [stderr] 408 |             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stderr]     |                       ^                        ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 408 -             task: Box<(dyn FnOnce() -> i32 + 'f)>,
[INFO] [stderr] 408 +             task: Box<dyn FnOnce() -> i32 + 'f >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:409:18
[INFO] [stderr]     |
[INFO] [stderr] 409 |         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stderr]     |                  ^                        ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 409 -         ) -> Box<(dyn FnOnce() -> i32 + 'f)> {
[INFO] [stderr] 409 +         ) -> Box<dyn FnOnce() -> i32 + 'f > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:446:23
[INFO] [stderr]     |
[INFO] [stderr] 446 |             task: Box<(dyn FnOnce() -> &'a str + 'a)>,
[INFO] [stderr]     |                       ^                            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 446 -             task: Box<(dyn FnOnce() -> &'a str + 'a)>,
[INFO] [stderr] 446 +             task: Box<dyn FnOnce() -> &'a str + 'a >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:447:18
[INFO] [stderr]     |
[INFO] [stderr] 447 |         ) -> Box<(dyn FnOnce() -> &'a str + 'a)> {
[INFO] [stderr]     |                  ^                            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 447 -         ) -> Box<(dyn FnOnce() -> &'a str + 'a)> {
[INFO] [stderr] 447 +         ) -> Box<dyn FnOnce() -> &'a str + 'a > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:599:27
[INFO] [stderr]     |
[INFO] [stderr] 599 |                 task: Box<(dyn FnOnce() -> u16)>,
[INFO] [stderr]     |                           ^                   ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 599 -                 task: Box<(dyn FnOnce() -> u16)>,
[INFO] [stderr] 599 +                 task: Box<dyn FnOnce() -> u16 >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:600:22
[INFO] [stderr]     |
[INFO] [stderr] 600 |             ) -> Box<(dyn FnOnce() -> u16)> {
[INFO] [stderr]     |                      ^                   ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 600 -             ) -> Box<(dyn FnOnce() -> u16)> {
[INFO] [stderr] 600 +             ) -> Box<dyn FnOnce() -> u16 > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `exec-rs` (lib) generated 2 warnings (run `cargo fix --lib -p exec-rs` to apply 2 suggestions)
[INFO] [stderr] warning: `exec-rs` (lib test) generated 10 warnings (2 duplicates) (run `cargo fix --lib -p exec-rs --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/exec_rs-cf53bc333dc79b85)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::test_combined_invoker ... ok
[INFO] [stdout] test tests::test_lifetime_str_ref ... ok
[INFO] [stdout] test tests::test_lifetime_iterator ... ok
[INFO] [stdout] test tests::test_shorter_lifetime ... ok
[INFO] [stdout] test tests::test_send_mode ... ok
[INFO] [stdout] test tests::test_post_invoke_on_panic ... ok
[INFO] [stdout] test sync::tests::test_remove_mutex_on_panic ... ok
[INFO] [stdout] test tests::test_not_post_invoke_on_panic ... ok
[INFO] [stdout] test sync::tests::test_concurrent_different_key ... ok
[INFO] [stdout] test sync::tests::test_mutex_sync_executor ... ok
[INFO] [stderr]    Doc-tests exec_rs
[INFO] [stdout] test sync::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 38.18s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/sync.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stderr]     |                   ^                      ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 235 -         task: Box<(dyn FnOnce() -> T + 'f)>,
[INFO] [stderr] 235 +         task: Box<dyn FnOnce() -> T + 'f >,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/sync.rs:236:14
[INFO] [stderr]     |
[INFO] [stderr] 236 |     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stderr]     |              ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 236 -     ) -> Box<(dyn FnOnce() -> T + 'f)> {
[INFO] [stderr] 236 +     ) -> Box<dyn FnOnce() -> T + 'f > {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1529e22d57c0b4ba5dc09ce9718b85beca2bd53589ad7f5ba187f1519578729c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1529e22d57c0b4ba5dc09ce9718b85beca2bd53589ad7f5ba187f1519578729c", kill_on_drop: false }`
[INFO] [stdout] 1529e22d57c0b4ba5dc09ce9718b85beca2bd53589ad7f5ba187f1519578729c