[INFO] crate i2cdev-bmp280 0.1.4 is already in cache [INFO] extracting crate i2cdev-bmp280 0.1.4 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/i2cdev-bmp280/0.1.4 [INFO] extracting crate i2cdev-bmp280 0.1.4 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/i2cdev-bmp280/0.1.4 [INFO] validating manifest of i2cdev-bmp280-0.1.4 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of i2cdev-bmp280-0.1.4 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing i2cdev-bmp280-0.1.4 [INFO] finished frobbing i2cdev-bmp280-0.1.4 [INFO] frobbed toml for i2cdev-bmp280-0.1.4 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/i2cdev-bmp280/0.1.4/Cargo.toml [INFO] started frobbing i2cdev-bmp280-0.1.4 [INFO] finished frobbing i2cdev-bmp280-0.1.4 [INFO] frobbed toml for i2cdev-bmp280-0.1.4 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/i2cdev-bmp280/0.1.4/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking i2cdev-bmp280-0.1.4 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-3/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/i2cdev-bmp280/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 069d709ce3035d989067dacc23453bd0e9cd35b6c537fdcd338752a75af16f9f [INFO] running `"docker" "start" "-a" "069d709ce3035d989067dacc23453bd0e9cd35b6c537fdcd338752a75af16f9f"` [INFO] [stderr] Checking i2csensors v0.1.3 [INFO] [stderr] Checking i2cdev-bmp280 v0.1.4 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/lib.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `BigEndian` [INFO] [stderr] --> src/lib.rs:25:28 [INFO] [stderr] | [INFO] [stderr] 25 | use byteorder::{ByteOrder, BigEndian, LittleEndian}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant `x1` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:122:5 [INFO] [stderr] | [INFO] [stderr] 122 | x1 = 0b00100000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X1` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_camel_case_types)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant `x2` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:123:5 [INFO] [stderr] | [INFO] [stderr] 123 | x2 = 0b01000000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X2` [INFO] [stderr] [INFO] [stderr] warning: variant `x4` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:124:5 [INFO] [stderr] | [INFO] [stderr] 124 | x4 = 0b01100000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X4` [INFO] [stderr] [INFO] [stderr] warning: variant `x8` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:125:5 [INFO] [stderr] | [INFO] [stderr] 125 | x8 = 0b10000000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X8` [INFO] [stderr] [INFO] [stderr] warning: variant `x16` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:126:5 [INFO] [stderr] | [INFO] [stderr] 126 | x16 = 0b10100000 [INFO] [stderr] | ^^^ help: convert the identifier to upper camel case: `X16` [INFO] [stderr] [INFO] [stderr] warning: variant `ms0_5` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:141:5 [INFO] [stderr] | [INFO] [stderr] 141 | ms0_5 = 0b00000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms0_5` [INFO] [stderr] [INFO] [stderr] warning: variant `ms62_5` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:142:5 [INFO] [stderr] | [INFO] [stderr] 142 | ms62_5 = 0b00100000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms62_5` [INFO] [stderr] [INFO] [stderr] warning: variant `ms125` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:143:5 [INFO] [stderr] | [INFO] [stderr] 143 | ms125 = 0b01000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms125` [INFO] [stderr] [INFO] [stderr] warning: variant `ms250` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:144:5 [INFO] [stderr] | [INFO] [stderr] 144 | ms250 = 0b01100000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms250` [INFO] [stderr] [INFO] [stderr] warning: variant `ms500` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:145:5 [INFO] [stderr] | [INFO] [stderr] 145 | ms500 = 0b10000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms500` [INFO] [stderr] [INFO] [stderr] warning: variant `ms1000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | ms1000 = 0b10100000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms1000` [INFO] [stderr] [INFO] [stderr] warning: variant `ms2000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:147:5 [INFO] [stderr] | [INFO] [stderr] 147 | ms2000 = 0b11000000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms2000` [INFO] [stderr] [INFO] [stderr] warning: variant `ms4000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:148:5 [INFO] [stderr] | [INFO] [stderr] 148 | ms4000 = 0b11100000 [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms4000` [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/lib.rs:237:16 [INFO] [stderr] | [INFO] [stderr] 237 | var1 = ((((32768 + var1)) * (self.coeff.dig_p1 as i32)) >> 15); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/lib.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `BigEndian` [INFO] [stderr] --> src/lib.rs:25:28 [INFO] [stderr] | [INFO] [stderr] 25 | use byteorder::{ByteOrder, BigEndian, LittleEndian}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant `x1` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:122:5 [INFO] [stderr] | [INFO] [stderr] 122 | x1 = 0b00100000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X1` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_camel_case_types)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant `x2` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:123:5 [INFO] [stderr] | [INFO] [stderr] 123 | x2 = 0b01000000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X2` [INFO] [stderr] [INFO] [stderr] warning: variant `x4` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:124:5 [INFO] [stderr] | [INFO] [stderr] 124 | x4 = 0b01100000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X4` [INFO] [stderr] [INFO] [stderr] warning: variant `x8` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:125:5 [INFO] [stderr] | [INFO] [stderr] 125 | x8 = 0b10000000, [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `X8` [INFO] [stderr] [INFO] [stderr] warning: variant `x16` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:126:5 [INFO] [stderr] | [INFO] [stderr] 126 | x16 = 0b10100000 [INFO] [stderr] | ^^^ help: convert the identifier to upper camel case: `X16` [INFO] [stderr] [INFO] [stderr] warning: variant `ms0_5` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:141:5 [INFO] [stderr] | [INFO] [stderr] 141 | ms0_5 = 0b00000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms0_5` [INFO] [stderr] [INFO] [stderr] warning: variant `ms62_5` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:142:5 [INFO] [stderr] | [INFO] [stderr] 142 | ms62_5 = 0b00100000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms62_5` [INFO] [stderr] [INFO] [stderr] warning: variant `ms125` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:143:5 [INFO] [stderr] | [INFO] [stderr] 143 | ms125 = 0b01000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms125` [INFO] [stderr] [INFO] [stderr] warning: variant `ms250` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:144:5 [INFO] [stderr] | [INFO] [stderr] 144 | ms250 = 0b01100000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms250` [INFO] [stderr] [INFO] [stderr] warning: variant `ms500` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:145:5 [INFO] [stderr] | [INFO] [stderr] 145 | ms500 = 0b10000000, [INFO] [stderr] | ^^^^^ help: convert the identifier to upper camel case: `Ms500` [INFO] [stderr] [INFO] [stderr] warning: variant `ms1000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | ms1000 = 0b10100000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms1000` [INFO] [stderr] [INFO] [stderr] warning: variant `ms2000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:147:5 [INFO] [stderr] | [INFO] [stderr] 147 | ms2000 = 0b11000000, [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms2000` [INFO] [stderr] [INFO] [stderr] warning: variant `ms4000` should have an upper camel case name [INFO] [stderr] --> src/lib.rs:148:5 [INFO] [stderr] | [INFO] [stderr] 148 | ms4000 = 0b11100000 [INFO] [stderr] | ^^^^^^ help: convert the identifier to upper camel case: `Ms4000` [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/lib.rs:237:16 [INFO] [stderr] | [INFO] [stderr] 237 | var1 = ((((32768 + var1)) * (self.coeff.dig_p1 as i32)) >> 15); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:66:13 [INFO] [stderr] | [INFO] [stderr] 66 | let mut register: u8 = 0x88; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:34 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:24 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:14 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:34 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:24 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:14 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:338:13 [INFO] [stderr] | [INFO] [stderr] 338 | let mut raw_temp: i32 = ((buf[0] as i32) << 12) + ((buf[1] as i32) << 4) + ((buf[2] as i32) >> 4); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/lib.rs:458:25 [INFO] [stderr] | [INFO] [stderr] 458 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/lib.rs:461:17 [INFO] [stderr] | [INFO] [stderr] 461 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:66:13 [INFO] [stderr] | [INFO] [stderr] 66 | let mut register: u8 = 0x88; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:24 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:14 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:220:34 [INFO] [stderr] | [INFO] [stderr] 220 | let (mut var1, mut var2, mut t): (i32, i32, i32); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:428:9 [INFO] [stderr] | [INFO] [stderr] 428 | self.temperature_celsius(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:24 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:14 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:273:34 [INFO] [stderr] | [INFO] [stderr] 273 | let (mut var1, mut var2, mut t): (f64, f64, f64); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:338:13 [INFO] [stderr] | [INFO] [stderr] 338 | let mut raw_temp: i32 = ((buf[0] as i32) << 12) + ((buf[1] as i32) << 4) + ((buf[2] as i32) >> 4); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:428:9 [INFO] [stderr] | [INFO] [stderr] 428 | self.temperature_celsius(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:32:25 [INFO] [stderr] | [INFO] [stderr] 32 | for i in 1..400{ [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:39:21 [INFO] [stderr] | [INFO] [stderr] 39 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:42:13 [INFO] [stderr] | [INFO] [stderr] 42 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:32:25 [INFO] [stderr] | [INFO] [stderr] 32 | for i in 1..400{ [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:39:21 [INFO] [stderr] | [INFO] [stderr] 39 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:42:13 [INFO] [stderr] | [INFO] [stderr] 42 | Err(e) => {} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.77s [INFO] running `"docker" "inspect" "069d709ce3035d989067dacc23453bd0e9cd35b6c537fdcd338752a75af16f9f"` [INFO] running `"docker" "rm" "-f" "069d709ce3035d989067dacc23453bd0e9cd35b6c537fdcd338752a75af16f9f"` [INFO] [stdout] 069d709ce3035d989067dacc23453bd0e9cd35b6c537fdcd338752a75af16f9f