[INFO] fetching crate rustogram 0.1.4...
[INFO] testing rustogram-0.1.4 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate rustogram 0.1.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rustogram 0.1.4 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustogram 0.1.4
[INFO] finished tweaking crates.io crate rustogram 0.1.4
[INFO] tweaked toml for crates.io crate rustogram 0.1.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3b2d144f6f05dc0b6ef8b76ebf18291dc69eb3c891063fd09510ea0fa578688
[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" "d3b2d144f6f05dc0b6ef8b76ebf18291dc69eb3c891063fd09510ea0fa578688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3b2d144f6f05dc0b6ef8b76ebf18291dc69eb3c891063fd09510ea0fa578688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3b2d144f6f05dc0b6ef8b76ebf18291dc69eb3c891063fd09510ea0fa578688", kill_on_drop: false }`
[INFO] [stdout] d3b2d144f6f05dc0b6ef8b76ebf18291dc69eb3c891063fd09510ea0fa578688
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5316741d899750e71a60f1da0484ee6e34dd375d23fb7da7f236a2a9fd13d3b
[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" "a5316741d899750e71a60f1da0484ee6e34dd375d23fb7da7f236a2a9fd13d3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustogram v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:543:9
[INFO] [stdout]     |
[INFO] [stdout] 543 |         try!(write!(f, "Histogram["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:544:9
[INFO] [stdout]     |
[INFO] [stdout] 544 |         try!(write!(f, "total_count: {}, ", self.total_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:545:9
[INFO] [stdout]     |
[INFO] [stdout] 545 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:551:9
[INFO] [stdout]     |
[INFO] [stdout] 551 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         try!(write!(f, "bucket_count: {}, ", self.bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         try!(write!(f, "sub_bucket_count: {}, ", self.sub_bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |         try!(write!(f, "counts_array_length: {}, ", self.counts_array_length));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         try!(write!(f, "word_size_in_bytes: {}, ", self.word_size_in_bytes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         try!(write!(f, "Value["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |         try!(write!(f, "value_iterated_to: {}, ", self.value_iterated_to));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         try!(write!(f, "value_iterated_from: {}, ", self.value_iterated_from));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(write!(f, "percentile: {}, ", self.percentile));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:166:50
[INFO] [stdout]     |
[INFO] [stdout] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stdout] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 |                                                  self.total_count_to_current_index -
[INFO] [stdout] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:170:50
[INFO] [stdout]     |
[INFO] [stdout] 170 | / ...                   ((100.0f64 *
[INFO] [stdout] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 170 |                                                  (100.0f64 *
[INFO] [stdout] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 |                                                   (self.array_total_count as f64),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "a5316741d899750e71a60f1da0484ee6e34dd375d23fb7da7f236a2a9fd13d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5316741d899750e71a60f1da0484ee6e34dd375d23fb7da7f236a2a9fd13d3b", kill_on_drop: false }`
[INFO] [stdout] a5316741d899750e71a60f1da0484ee6e34dd375d23fb7da7f236a2a9fd13d3b
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a40fcf33b0af7b07f67294b2cac999ea900502e4fde76e7a4e3a2f70a213ac2
[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" "5a40fcf33b0af7b07f67294b2cac999ea900502e4fde76e7a4e3a2f70a213ac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustogram v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:543:9
[INFO] [stdout]     |
[INFO] [stdout] 543 |         try!(write!(f, "Histogram["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:544:9
[INFO] [stdout]     |
[INFO] [stdout] 544 |         try!(write!(f, "total_count: {}, ", self.total_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:545:9
[INFO] [stdout]     |
[INFO] [stdout] 545 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:551:9
[INFO] [stdout]     |
[INFO] [stdout] 551 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         try!(write!(f, "bucket_count: {}, ", self.bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         try!(write!(f, "sub_bucket_count: {}, ", self.sub_bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |         try!(write!(f, "counts_array_length: {}, ", self.counts_array_length));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         try!(write!(f, "word_size_in_bytes: {}, ", self.word_size_in_bytes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         try!(write!(f, "Value["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |         try!(write!(f, "value_iterated_to: {}, ", self.value_iterated_to));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         try!(write!(f, "value_iterated_from: {}, ", self.value_iterated_from));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(write!(f, "percentile: {}, ", self.percentile));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:166:50
[INFO] [stdout]     |
[INFO] [stdout] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stdout] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 |                                                  self.total_count_to_current_index -
[INFO] [stdout] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:170:50
[INFO] [stdout]     |
[INFO] [stdout] 170 | / ...                   ((100.0f64 *
[INFO] [stdout] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 170 |                                                  (100.0f64 *
[INFO] [stdout] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 |                                                   (self.array_total_count as f64),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:543:9
[INFO] [stdout]     |
[INFO] [stdout] 543 |         try!(write!(f, "Histogram["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:544:9
[INFO] [stdout]     |
[INFO] [stdout] 544 |         try!(write!(f, "total_count: {}, ", self.total_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:545:9
[INFO] [stdout]     |
[INFO] [stdout] 545 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:551:9
[INFO] [stdout]     |
[INFO] [stdout] 551 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         try!(write!(f, "bucket_count: {}, ", self.bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         try!(write!(f, "sub_bucket_count: {}, ", self.sub_bucket_count));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |         try!(write!(f, "counts_array_length: {}, ", self.counts_array_length));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/histogram.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         try!(write!(f, "word_size_in_bytes: {}, ", self.word_size_in_bytes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         try!(write!(f, "Value["));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |         try!(write!(f, "value_iterated_to: {}, ", self.value_iterated_to));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         try!(write!(f, "value_iterated_from: {}, ", self.value_iterated_from));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(write!(f, "percentile: {}, ", self.percentile));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/iter.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |         try!(write!(f,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:166:50
[INFO] [stdout]     |
[INFO] [stdout] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stdout] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 |                                                  self.total_count_to_current_index -
[INFO] [stdout] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/iter.rs:170:50
[INFO] [stdout]     |
[INFO] [stdout] 170 | / ...                   ((100.0f64 *
[INFO] [stdout] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 170 |                                                  (100.0f64 *
[INFO] [stdout] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stdout] 172 |                                                   (self.array_total_count as f64),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "5a40fcf33b0af7b07f67294b2cac999ea900502e4fde76e7a4e3a2f70a213ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a40fcf33b0af7b07f67294b2cac999ea900502e4fde76e7a4e3a2f70a213ac2", kill_on_drop: false }`
[INFO] [stdout] 5a40fcf33b0af7b07f67294b2cac999ea900502e4fde76e7a4e3a2f70a213ac2
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2850db7c425445de961a44932138dfe80e8054dcad5cd7e37df7af47005f94e7
[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" "2850db7c425445de961a44932138dfe80e8054dcad5cd7e37df7af47005f94e7", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:543:9
[INFO] [stderr]     |
[INFO] [stderr] 543 |         try!(write!(f, "Histogram["));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:544:9
[INFO] [stderr]     |
[INFO] [stderr] 544 |         try!(write!(f, "total_count: {}, ", self.total_count));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:545:9
[INFO] [stderr]     |
[INFO] [stderr] 545 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:548:9
[INFO] [stderr]     |
[INFO] [stderr] 548 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:551:9
[INFO] [stderr]     |
[INFO] [stderr] 551 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:554:9
[INFO] [stderr]     |
[INFO] [stderr] 554 |         try!(write!(f, "bucket_count: {}, ", self.bucket_count));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         try!(write!(f, "sub_bucket_count: {}, ", self.sub_bucket_count));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:556:9
[INFO] [stderr]     |
[INFO] [stderr] 556 |         try!(write!(f, "counts_array_length: {}, ", self.counts_array_length));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:557:9
[INFO] [stderr]     |
[INFO] [stderr] 557 |         try!(write!(f, "word_size_in_bytes: {}, ", self.word_size_in_bytes));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:275:9
[INFO] [stderr]     |
[INFO] [stderr] 275 |         try!(write!(f, "Value["));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:276:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         try!(write!(f, "value_iterated_to: {}, ", self.value_iterated_to));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |         try!(write!(f, "value_iterated_from: {}, ", self.value_iterated_from));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:278:9
[INFO] [stderr]     |
[INFO] [stderr] 278 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:281:9
[INFO] [stderr]     |
[INFO] [stderr] 281 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:290:9
[INFO] [stderr]     |
[INFO] [stderr] 290 |         try!(write!(f, "percentile: {}, ", self.percentile));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:291:9
[INFO] [stderr]     |
[INFO] [stderr] 291 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/iter.rs:166:50
[INFO] [stderr]     |
[INFO] [stderr] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stderr] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 |                                                  self.total_count_to_current_index -
[INFO] [stderr] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/iter.rs:170:50
[INFO] [stderr]     |
[INFO] [stderr] 170 | / ...                   ((100.0f64 *
[INFO] [stderr] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 170 |                                                  (100.0f64 *
[INFO] [stderr] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 |                                                   (self.array_total_count as f64),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:543:9
[INFO] [stderr]     |
[INFO] [stderr] 543 |         try!(write!(f, "Histogram["));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/histogram.rs:544:9
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 544 |         try!(write!(f, "total_count: {}, ", self.total_count));
[INFO] [stdout] 
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:545:9
[INFO] [stderr]     |
[INFO] [stderr] 545 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:548:9
[INFO] [stderr]     |
[INFO] [stderr] 548 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:551:9
[INFO] [stderr]     |
[INFO] [stderr] 551 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:554:9
[INFO] [stderr]     |
[INFO] [stderr] 554 |         try!(write!(f, "bucket_count: {}, ", self.bucket_count));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         try!(write!(f, "sub_bucket_count: {}, ", self.sub_bucket_count));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:556:9
[INFO] [stderr]     |
[INFO] [stderr] 556 |         try!(write!(f, "counts_array_length: {}, ", self.counts_array_length));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/histogram.rs:557:9
[INFO] [stderr]     |
[INFO] [stderr] 557 |         try!(write!(f, "word_size_in_bytes: {}, ", self.word_size_in_bytes));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:275:9
[INFO] [stderr]     |
[INFO] [stderr] 275 |         try!(write!(f, "Value["));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:276:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         try!(write!(f, "value_iterated_to: {}, ", self.value_iterated_to));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |         try!(write!(f, "value_iterated_from: {}, ", self.value_iterated_from));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:278:9
[INFO] [stderr]     |
[INFO] [stderr] 278 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:281:9
[INFO] [stderr]     |
[INFO] [stderr] 281 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:290:9
[INFO] [stderr]     |
[INFO] [stderr] 290 |         try!(write!(f, "percentile: {}, ", self.percentile));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/iter.rs:291:9
[INFO] [stderr]     |
[INFO] [stderr] 291 |         try!(write!(f,
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/iter.rs:166:50
[INFO] [stderr]     |
[INFO] [stderr] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stderr] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 |                                                  self.total_count_to_current_index -
[INFO] [stderr] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/iter.rs:170:50
[INFO] [stderr]     |
[INFO] [stderr] 170 | / ...                   ((100.0f64 *
[INFO] [stderr] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 170 |                                                  (100.0f64 *
[INFO] [stderr] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 |                                                   (self.array_total_count as f64),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustogram-dc6e2c00c4457727
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/data_access-806a62931da3d010
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test test_get_min_value ... ok
[INFO] [stdout] test test_get_percentile_at_or_below_value ... ok
[INFO] [stdout] test test_get_recorded_values ... ok
[INFO] [stdout] test test_get_max_value ... ok
[INFO] [stdout] test test_collect_method_returns_same_as_callback_method_for_recorded_values ... ok
[INFO] [stdout] test test_get_total_count ... ok
[INFO] [stdout] test test_get_mean_value ... ok
[INFO] [stdout] test test_get_value_at_percentile ... ok
[INFO] [stdout] test test_get_std_deviation ... ok
[INFO] [stdout] test test_get_count_at_value ... ok
[INFO] [stdout] test test_get_count_between_values ... ok
[INFO] [stdout] test test_get_all_values ... ok
[INFO] [stdout] test test_collect_method_returns_same_as_callback_method_for_all_values ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-1e7dbb186bc949d1
[INFO] [stdout] test test_get_value_at_percentile_for_large_histogram ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_construction_with_large_numbers ... ok
[INFO] [stdout] test test_construction_argument_gets ... ok
[INFO] [stdout] test test_empty_histogram ... ok
[INFO] [stdout] test test_get_max_value ... ok
[INFO] [stdout] test test_get_min_value ... ok
[INFO] [stdout] test test_record_value ... ok
[INFO] [stdout] test test_reset ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serialisation-5aeecb84d3399233
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test test_i32_encoding_and_decoding_limits ... ok
[INFO] [stdout] test test_zig_zag_encoding_for_single_value ... ok
[INFO] [stdout] test test_i64_encoding_and_decoding ... ok
[INFO] [stdout] test test_i32_encoding_and_decoding ... ok
[INFO] [stdout] test test_zig_zag_encoding_for_multiple_values ... ok
[INFO] [stdout] test test_zig_zag_encoding_for_limits ... ok
[INFO] [stdout] test test_deserialise ... ok
[INFO] [stdout] test test_i64_encoding_and_decoding_limits ... ok
[INFO] [stdout] test test_sanity ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustogram
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> /opt/rustwide/workdir/src/iter.rs:166:50
[INFO] [stderr]     |
[INFO] [stderr] 166 | / ...                   (self.total_count_to_current_index -
[INFO] [stderr] 167 | | ...                    self.total_count_to_prev_index),
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 |                                                  self.total_count_to_current_index -
[INFO] [stderr] 167 |                                                   self.total_count_to_prev_index,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> /opt/rustwide/workdir/src/iter.rs:170:50
[INFO] [stderr]     |
[INFO] [stderr] 170 | / ...                   ((100.0f64 *
[INFO] [stderr] 171 | | ...                     self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 | | ...                    (self.array_total_count as f64)),
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 170 |                                                  (100.0f64 *
[INFO] [stderr] 171 |                                                    self.total_count_to_current_index as f64) /
[INFO] [stderr] 172 |                                                   (self.array_total_count as f64),
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2850db7c425445de961a44932138dfe80e8054dcad5cd7e37df7af47005f94e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2850db7c425445de961a44932138dfe80e8054dcad5cd7e37df7af47005f94e7", kill_on_drop: false }`
[INFO] [stdout] 2850db7c425445de961a44932138dfe80e8054dcad5cd7e37df7af47005f94e7
