[INFO] fetching crate tuple_utils 0.4.0...
[INFO] testing tuple_utils-0.4.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate tuple_utils 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tuple_utils 0.4.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuple_utils 0.4.0
[INFO] finished tweaking crates.io crate tuple_utils 0.4.0
[INFO] tweaked toml for crates.io crate tuple_utils 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ae170816f1067e8a73a9c60aa6401e6beb97e01ab54ad922412aae0c45662f6b
[INFO] running `Command { std: "docker" "start" "-a" "ae170816f1067e8a73a9c60aa6401e6beb97e01ab54ad922412aae0c45662f6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae170816f1067e8a73a9c60aa6401e6beb97e01ab54ad922412aae0c45662f6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae170816f1067e8a73a9c60aa6401e6beb97e01ab54ad922412aae0c45662f6b", kill_on_drop: false }`
[INFO] [stdout] ae170816f1067e8a73a9c60aa6401e6beb97e01ab54ad922412aae0c45662f6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c7d849e567dfbdfc3ac64ec65602d0efd494af2327a4c40e67d628c953a704e
[INFO] running `Command { std: "docker" "start" "-a" "7c7d849e567dfbdfc3ac64ec65602d0efd494af2327a4c40e67d628c953a704e", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuple_utils v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:45:27
[INFO] [stdout]     |
[INFO] [stdout] 45  |               type Output = ( $( $from ,)*  T);
[INFO] [stdout]     |                             ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 45  -             type Output = ( $( $from ,)*  T);
[INFO] [stdout] 45  +             type Output =  $( $from ,)*  T;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:49:38
[INFO] [stdout]     |
[INFO] [stdout] 49  |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout]     |                                        ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 49  -             fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout] 49  +             fn append(self, x: T) ->  $( $from ,)*  T {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "7c7d849e567dfbdfc3ac64ec65602d0efd494af2327a4c40e67d628c953a704e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c7d849e567dfbdfc3ac64ec65602d0efd494af2327a4c40e67d628c953a704e", kill_on_drop: false }`
[INFO] [stdout] 7c7d849e567dfbdfc3ac64ec65602d0efd494af2327a4c40e67d628c953a704e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2931a013fe16ca2d34f01983f3c5633943b7c90258b03a14b25d7cb6bda27e98
[INFO] running `Command { std: "docker" "start" "-a" "2931a013fe16ca2d34f01983f3c5633943b7c90258b03a14b25d7cb6bda27e98", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:45:27
[INFO] [stdout]     |
[INFO] [stdout] 45  |               type Output = ( $( $from ,)*  T);
[INFO] [stdout]     |                             ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 45  -             type Output = ( $( $from ,)*  T);
[INFO] [stdout] 45  +             type Output =  $( $from ,)*  T;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tuple_utils v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:49:38
[INFO] [stdout]     |
[INFO] [stdout] 49  |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout]     |                                        ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 49  -             fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout] 49  +             fn append(self, x: T) ->  $( $from ,)*  T {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:45:27
[INFO] [stdout]     |
[INFO] [stdout] 45  |               type Output = ( $( $from ,)*  T);
[INFO] [stdout]     |                             ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 45  -             type Output = ( $( $from ,)*  T);
[INFO] [stdout] 45  +             type Output =  $( $from ,)*  T;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:49:38
[INFO] [stdout]     |
[INFO] [stdout] 49  |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout]     |                                        ^                ^
[INFO] [stdout] ...
[INFO] [stdout] 110 |   for_each_prefix! {
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |     tuple_impl,
[INFO] [stdout] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 113 | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 49  -             fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout] 49  +             fn append(self, x: T) ->  $( $from ,)*  T {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "2931a013fe16ca2d34f01983f3c5633943b7c90258b03a14b25d7cb6bda27e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2931a013fe16ca2d34f01983f3c5633943b7c90258b03a14b25d7cb6bda27e98", kill_on_drop: false }`
[INFO] [stdout] 2931a013fe16ca2d34f01983f3c5633943b7c90258b03a14b25d7cb6bda27e98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9aba4e1e3cfb66ee2b4c7de39a48e4ba0d695be60ca1cfc3aace7024d9e5fb98
[INFO] running `Command { std: "docker" "start" "-a" "9aba4e1e3cfb66ee2b4c7de39a48e4ba0d695be60ca1cfc3aace7024d9e5fb98", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:45:27
[INFO] [stderr]     |
[INFO] [stderr] 45  |               type Output = ( $( $from ,)*  T);
[INFO] [stderr]     |                             ^                ^
[INFO] [stderr] ...
[INFO] [stderr] 110 |   for_each_prefix! {
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 111 | |     tuple_impl,
[INFO] [stderr] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stderr] 113 | | }
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 45  -             type Output = ( $( $from ,)*  T);
[INFO] [stderr] 45  +             type Output =  $( $from ,)*  T;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:49:38
[INFO] [stderr]     |
[INFO] [stderr] 49  |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stderr]     |                                        ^                ^
[INFO] [stderr] ...
[INFO] [stderr] 110 |   for_each_prefix! {
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 111 | |     tuple_impl,
[INFO] [stderr] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stderr] 113 | | }
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 49  -             fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stderr] 49  +             fn append(self, x: T) ->  $( $from ,)*  T {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `tuple_utils` (lib) generated 2 warnings
[INFO] [stderr] warning: `tuple_utils` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tuple_utils-258dfeb247bae69c)
[INFO] [stdout] test test::append ... ok
[INFO] [stdout] test test::merge ... ok
[INFO] [stdout] test test::prepend ... ok
[INFO] [stdout] test test::split ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tuple_utils
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:45:27
[INFO] [stderr]     |
[INFO] [stderr] 45  |               type Output = ( $( $from ,)*  T);
[INFO] [stderr]     |                             ^                ^
[INFO] [stderr] ...
[INFO] [stderr] 110 |   for_each_prefix! {
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 111 | |     tuple_impl,
[INFO] [stderr] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stderr] 113 | | }
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 45  -             type Output = ( $( $from ,)*  T);
[INFO] [stderr] 45  +             type Output =  $( $from ,)*  T;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:49:38
[INFO] [stderr]     |
[INFO] [stderr] 49  |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stderr]     |                                        ^                ^
[INFO] [stderr] ...
[INFO] [stderr] 110 |   for_each_prefix! {
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 111 | |     tuple_impl,
[INFO] [stderr] 112 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stderr] 113 | | }
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `tuple_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 49  -             fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stderr] 49  +             fn append(self, x: T) ->  $( $from ,)*  T {
[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" "9aba4e1e3cfb66ee2b4c7de39a48e4ba0d695be60ca1cfc3aace7024d9e5fb98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aba4e1e3cfb66ee2b4c7de39a48e4ba0d695be60ca1cfc3aace7024d9e5fb98", kill_on_drop: false }`
[INFO] [stdout] 9aba4e1e3cfb66ee2b4c7de39a48e4ba0d695be60ca1cfc3aace7024d9e5fb98