[INFO] fetching crate throttle-timer 1.0.0...
[INFO] checking throttle-timer-1.0.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate throttle-timer 1.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate throttle-timer 1.0.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate throttle-timer 1.0.0
[INFO] finished tweaking crates.io crate throttle-timer 1.0.0
[INFO] tweaked toml for crates.io crate throttle-timer 1.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2561a3f1ade44bf5ebe2038a6fb2867a532fb100b8b5603a7f97d985b9e15023
[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" "2561a3f1ade44bf5ebe2038a6fb2867a532fb100b8b5603a7f97d985b9e15023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2561a3f1ade44bf5ebe2038a6fb2867a532fb100b8b5603a7f97d985b9e15023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2561a3f1ade44bf5ebe2038a6fb2867a532fb100b8b5603a7f97d985b9e15023", kill_on_drop: false }`
[INFO] [stdout] 2561a3f1ade44bf5ebe2038a6fb2867a532fb100b8b5603a7f97d985b9e15023
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--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] 478f889a441d1b36182d92d8d2fc80d9647cb360aaf2ad46ff5d92e04dd79465
[INFO] running `Command { std: "docker" "start" "-a" "478f889a441d1b36182d92d8d2fc80d9647cb360aaf2ad46ff5d92e04dd79465", kill_on_drop: false }`
[INFO] [stderr]     Checking throttle-timer v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lib.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 | /                 (self.max_frequency
[INFO] [stdout] 97 | |                     - Instant::now()
[INFO] [stdout] 98 | |                         .duration_since(last_time)
[INFO] [stdout] 99 | |                         .min(self.max_frequency))
[INFO] [stdout]    | |_________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 96 ~                 self.max_frequency
[INFO] [stdout] 97 +                     - Instant::now()
[INFO] [stdout] 98 +                         .duration_since(last_time)
[INFO] [stdout] 99 +                         .min(self.max_frequency)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:129:53
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn run_throttle_cb(&mut self, success: &mut FnMut(), throttled: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                     ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:129:78
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn run_throttle_cb(&mut self, success: &mut FnMut(), throttled: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:144:41
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn run(&mut self, success: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                         ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:150:46
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn run_wait(&mut self, success: &mut FnMut()) {
[INFO] [stdout]     |                                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:156:50
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn run_with_msg(&mut self, success: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                  ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lib.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 | /                 (self.max_frequency
[INFO] [stdout] 97 | |                     - Instant::now()
[INFO] [stdout] 98 | |                         .duration_since(last_time)
[INFO] [stdout] 99 | |                         .min(self.max_frequency))
[INFO] [stdout]    | |_________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 96 ~                 self.max_frequency
[INFO] [stdout] 97 +                     - Instant::now()
[INFO] [stdout] 98 +                         .duration_since(last_time)
[INFO] [stdout] 99 +                         .min(self.max_frequency)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:129:53
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn run_throttle_cb(&mut self, success: &mut FnMut(), throttled: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                     ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:129:78
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn run_throttle_cb(&mut self, success: &mut FnMut(), throttled: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:144:41
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn run(&mut self, success: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                         ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:150:46
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn run_wait(&mut self, success: &mut FnMut()) {
[INFO] [stdout]     |                                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:156:50
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn run_with_msg(&mut self, success: &mut FnMut()) -> bool {
[INFO] [stdout]     |                                                  ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "478f889a441d1b36182d92d8d2fc80d9647cb360aaf2ad46ff5d92e04dd79465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "478f889a441d1b36182d92d8d2fc80d9647cb360aaf2ad46ff5d92e04dd79465", kill_on_drop: false }`
[INFO] [stdout] 478f889a441d1b36182d92d8d2fc80d9647cb360aaf2ad46ff5d92e04dd79465