[INFO] fetching crate tuple 0.5.1...
[INFO] checking tuple-0.5.1 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate tuple 0.5.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tuple 0.5.1 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuple 0.5.1
[INFO] finished tweaking crates.io crate tuple 0.5.1
[INFO] tweaked toml for crates.io crate tuple 0.5.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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] 7d0bf3ab6ba38a5d896ee4604ec416d3613802d2aaae1b6bae6d0b54aa64b13c
[INFO] running `Command { std: "docker" "start" "-a" "7d0bf3ab6ba38a5d896ee4604ec416d3613802d2aaae1b6bae6d0b54aa64b13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d0bf3ab6ba38a5d896ee4604ec416d3613802d2aaae1b6bae6d0b54aa64b13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d0bf3ab6ba38a5d896ee4604ec416d3613802d2aaae1b6bae6d0b54aa64b13c", kill_on_drop: false }`
[INFO] [stdout] 7d0bf3ab6ba38a5d896ee4604ec416d3613802d2aaae1b6bae6d0b54aa64b13c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fd3566e6328d2f69e68fc7b3be56326c5cc45617bb7f601ff452e728d21e66f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1fd3566e6328d2f69e68fc7b3be56326c5cc45617bb7f601ff452e728d21e66f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tuple v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:177:39
[INFO] [stdout]     |
[INFO] [stdout] 177 |         impl<$($l,)* $($r),*> OpSplit<($($l),*)> for ($($l,)* $($r),*) {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:178:22
[INFO] [stdout]     |
[INFO] [stdout] 178 |             type R = ($($r),*);
[INFO] [stdout]     |                      ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |             fn split(self) -> (($($l),*), Self::R) {
[INFO] [stdout]     |                                ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::iter::IntoIterator`
[INFO] [stdout]  --> src/m_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:42:33
[INFO] [stdout]     |
[INFO] [stdout] 42  |     ( ; $($args:ident),* ) => ( ($($args),*) )
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/m_tuple.rs:231:1
[INFO] [stdout]     |
[INFO] [stdout] 231 | impl_tuple!(m_tuple);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:177:39
[INFO] [stdout]     |
[INFO] [stdout] 177 |         impl<$($l,)* $($r),*> OpSplit<($($l),*)> for ($($l,)* $($r),*) {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:178:22
[INFO] [stdout]     |
[INFO] [stdout] 178 |             type R = ($($r),*);
[INFO] [stdout]     |                      ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/m_tuple.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |             fn split(self) -> (($($l),*), Self::R) {
[INFO] [stdout]     |                                ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 232 | m_join!();
[INFO] [stdout]     | ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::iter::IntoIterator`
[INFO] [stdout]  --> src/m_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.50s
[INFO] running `Command { std: "docker" "inspect" "1fd3566e6328d2f69e68fc7b3be56326c5cc45617bb7f601ff452e728d21e66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fd3566e6328d2f69e68fc7b3be56326c5cc45617bb7f601ff452e728d21e66f", kill_on_drop: false }`
[INFO] [stdout] 1fd3566e6328d2f69e68fc7b3be56326c5cc45617bb7f601ff452e728d21e66f