[INFO] updating cached repository https://github.com/dedmons/mandelbrot [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 226419bdeb7c70c3b98630d6627b111a02a2a5ff [INFO] checking dedmons/mandelbrot against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdedmons%2Fmandelbrot" "/workspace/builds/worker-14/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dedmons/mandelbrot on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69 [INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/dedmons/mandelbrot [INFO] finished tweaking git repo https://github.com/dedmons/mandelbrot [INFO] tweaked toml for git repo https://github.com/dedmons/mandelbrot written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/dedmons/mandelbrot already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 96b39e46307160fbf39565a3905860c2f2e6d1805ef3bdf51eaf859d1a89a12f [INFO] running `"docker" "start" "-a" "96b39e46307160fbf39565a3905860c2f2e6d1805ef3bdf51eaf859d1a89a12f"` [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Checking time v0.2.2 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling num-rational v0.2.3 [INFO] [stderr] Checking inflate v0.4.5 [INFO] [stderr] Checking gif v0.10.3 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking threadpool v1.7.1 [INFO] [stderr] Checking jpeg-decoder v0.1.18 [INFO] [stderr] Checking png v0.15.3 [INFO] [stderr] Checking num-iter v0.1.40 [INFO] [stderr] Checking tiff v0.3.1 [INFO] [stderr] Checking image v0.22.4 [INFO] [stderr] Checking mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use time::PreciseTime; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:196:17 [INFO] [stderr] | [INFO] [stderr] 196 | let start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:218:28 [INFO] [stderr] | [INFO] [stderr] 218 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:226:28 [INFO] [stderr] | [INFO] [stderr] 226 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:238:46 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:270:32 [INFO] [stderr] | [INFO] [stderr] 270 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:281:28 [INFO] [stderr] | [INFO] [stderr] 281 | let render_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:282:31 [INFO] [stderr] | [INFO] [stderr] 282 | let mut phase_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:286:61 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:288:23 [INFO] [stderr] | [INFO] [stderr] 288 | phase_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:312:57 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:313:64 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:316:42 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use time::PreciseTime; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:196:17 [INFO] [stderr] | [INFO] [stderr] 196 | let start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:218:28 [INFO] [stderr] | [INFO] [stderr] 218 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:226:28 [INFO] [stderr] | [INFO] [stderr] 226 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:238:46 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/main.rs:270:32 [INFO] [stderr] | [INFO] [stderr] 270 | ... Error::description(&why)), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:281:28 [INFO] [stderr] | [INFO] [stderr] 281 | let render_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:282:31 [INFO] [stderr] | [INFO] [stderr] 282 | let mut phase_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:286:61 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:288:23 [INFO] [stderr] | [INFO] [stderr] 288 | phase_start = PreciseTime::now(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:312:57 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:313:64 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::PreciseTime': Use `Instant` [INFO] [stderr] --> src/main.rs:316:42 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:238:43 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:238:37 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:286:58 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:238:43 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:286:46 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:312:54 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:238:37 [INFO] [stderr] | [INFO] [stderr] 238 | println!("Bootstrap time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:312:42 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:286:58 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:313:61 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:286:46 [INFO] [stderr] | [INFO] [stderr] 286 | println!("Generation Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:312:54 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:313:48 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:316:39 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:312:42 [INFO] [stderr] | [INFO] [stderr] 312 | println!("Render Duration:\n{}", phase_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:313:61 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:313:48 [INFO] [stderr] | [INFO] [stderr] 313 | println!("Total Render Duration:\n{}", render_start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'time::Instant::to': Use `rhs - lhs` [INFO] [stderr] --> src/main.rs:316:39 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:316:33 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] error: aborting due to 5 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error[E0277]: `time::Duration` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:316:33 [INFO] [stderr] | [INFO] [stderr] 316 | println!("Total time:\n{}", start.to(PreciseTime::now())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `time::Duration` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `time::Duration` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] error: could not compile `mandelbrot`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: aborting due to 5 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: could not compile `mandelbrot`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "96b39e46307160fbf39565a3905860c2f2e6d1805ef3bdf51eaf859d1a89a12f"` [INFO] running `"docker" "rm" "-f" "96b39e46307160fbf39565a3905860c2f2e6d1805ef3bdf51eaf859d1a89a12f"` [INFO] [stdout] 96b39e46307160fbf39565a3905860c2f2e6d1805ef3bdf51eaf859d1a89a12f