[INFO] fetching crate tuple_utils 0.4.0...
[INFO] checking tuple_utils-0.4.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate tuple_utils 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate tuple_utils 0.4.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5da16644ea8863d284e36a444dafa2f4f593b50632132adb45eb9cc7ed3d77c8
[INFO] running `Command { std: "docker" "start" "-a" "5da16644ea8863d284e36a444dafa2f4f593b50632132adb45eb9cc7ed3d77c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5da16644ea8863d284e36a444dafa2f4f593b50632132adb45eb9cc7ed3d77c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da16644ea8863d284e36a444dafa2f4f593b50632132adb45eb9cc7ed3d77c8", kill_on_drop: false }`
[INFO] [stdout] 5da16644ea8863d284e36a444dafa2f4f593b50632132adb45eb9cc7ed3d77c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb38e03f6dbeb856db19d787968c332616aab113783ccc67da78f67f71a69b9d
[INFO] running `Command { std: "docker" "start" "-a" "eb38e03f6dbeb856db19d787968c332616aab113783ccc67da78f67f71a69b9d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking 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] 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]     | |_- 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` which comes from the expansion of the macro `for_each_prefix` (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/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] 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]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` which comes from the expansion of the macro `for_each_prefix` (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/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] 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]     | |_- 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` which comes from the expansion of the macro `for_each_prefix` (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/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] 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]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tuple_impl` which comes from the expansion of the macro `for_each_prefix` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "eb38e03f6dbeb856db19d787968c332616aab113783ccc67da78f67f71a69b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb38e03f6dbeb856db19d787968c332616aab113783ccc67da78f67f71a69b9d", kill_on_drop: false }`
[INFO] [stdout] eb38e03f6dbeb856db19d787968c332616aab113783ccc67da78f67f71a69b9d