[INFO] fetching crate ufire_ise 2.0.0...
[INFO] documenting ufire_ise-2.0.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate ufire_ise 2.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ufire_ise 2.0.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufire_ise 2.0.0
[INFO] finished tweaking crates.io crate ufire_ise 2.0.0
[INFO] tweaked toml for crates.io crate ufire_ise 2.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1349a626599286992c1bb10e010ffc40fde303de4de2a00306e7417c7e02e7b8
[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" "1349a626599286992c1bb10e010ffc40fde303de4de2a00306e7417c7e02e7b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1349a626599286992c1bb10e010ffc40fde303de4de2a00306e7417c7e02e7b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1349a626599286992c1bb10e010ffc40fde303de4de2a00306e7417c7e02e7b8", kill_on_drop: false }`
[INFO] [stdout] 1349a626599286992c1bb10e010ffc40fde303de4de2a00306e7417c7e02e7b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 14e9bc879b8d4bfac0eaac2366aa5a86eb47cb5a3d6209f967c7d63406c4a4f5
[INFO] running `Command { std: "docker" "start" "-a" "14e9bc879b8d4bfac0eaac2366aa5a86eb47cb5a3d6209f967c7d63406c4a4f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking ufire_ise v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting ufire_ise v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:155:51
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:166:46
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:264:54
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:287:60
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:299:61
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:311:59
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:366:45
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                             ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:401:64
[INFO] [stdout]     |
[INFO] [stdout] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:415:50
[INFO] [stdout]     |
[INFO] [stdout] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:444:58
[INFO] [stdout]     |
[INFO] [stdout] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:478:53
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:511:62
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:155:51
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:166:46
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:264:54
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:287:60
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:299:61
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:311:59
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:366:45
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                             ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:401:64
[INFO] [stdout]     |
[INFO] [stdout] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:415:50
[INFO] [stdout]     |
[INFO] [stdout] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:444:58
[INFO] [stdout]     |
[INFO] [stdout] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:478:53
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:511:62
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.74s
[INFO] running `Command { std: "docker" "inspect" "14e9bc879b8d4bfac0eaac2366aa5a86eb47cb5a3d6209f967c7d63406c4a4f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e9bc879b8d4bfac0eaac2366aa5a86eb47cb5a3d6209f967c7d63406c4a4f5", kill_on_drop: false }`
[INFO] [stdout] 14e9bc879b8d4bfac0eaac2366aa5a86eb47cb5a3d6209f967c7d63406c4a4f5