[INFO] fetching crate ufire_sht20 0.9.1... [INFO] checking ufire_sht20-0.9.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate ufire_sht20 0.9.1 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate ufire_sht20 0.9.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ufire_sht20 0.9.1 [INFO] finished tweaking crates.io crate ufire_sht20 0.9.1 [INFO] tweaked toml for crates.io crate ufire_sht20 0.9.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate crates.io crate ufire_sht20 0.9.1 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded shrust v0.0.6 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded byteorder v1.2.1 [INFO] [stderr] Downloaded term v0.5.1 [INFO] [stderr] Downloaded iovec v0.1.2 [INFO] [stderr] Downloaded tempdir v0.3.6 [INFO] [stderr] Downloaded bytecount v0.2.0 [INFO] [stderr] Downloaded glob v0.2.11 [INFO] [stderr] Downloaded dtoa v0.4.2 [INFO] [stderr] Downloaded backtrace v0.3.5 [INFO] [stderr] Downloaded bytes v0.4.6 [INFO] [stderr] Downloaded rand v0.4.2 [INFO] [stderr] Downloaded nix v0.10.0 [INFO] [stderr] Downloaded backtrace-sys v0.1.16 [INFO] [stderr] Downloaded cargo_metadata v0.3.3 [INFO] [stderr] Downloaded libc v0.2.37 [INFO] [stderr] Downloaded csv v1.0.5 [INFO] [stderr] Downloaded winapi v0.3.4 [INFO] [stderr] Downloaded gcc v0.3.54 [INFO] [stderr] Downloaded serde_derive_internals v0.19.0 [INFO] [stderr] Downloaded serde_derive v1.0.27 [INFO] [stderr] Downloaded cc v1.0.5 [INFO] [stderr] Downloaded skeptic v0.13.2 [INFO] [stderr] Downloaded i2cdev v0.3.2 [INFO] [stderr] Downloaded redox_syscall v0.1.51 [INFO] [stderr] Downloaded csv-core v0.1.5 [INFO] [stderr] Downloaded encode_unicode v0.3.5 [INFO] [stderr] Downloaded num-traits v0.2.1 [INFO] [stderr] Downloaded serde_json v1.0.10 [INFO] [stderr] Downloaded remove_dir_all v0.3.0 [INFO] [stderr] Downloaded termion v1.5.1 [INFO] [stderr] Downloaded memchr v2.2.0 [INFO] [stderr] Downloaded semver v0.8.0 [INFO] [stderr] Downloaded cfg-if v0.1.2 [INFO] [stderr] Downloaded rustc-demangle v0.1.7 [INFO] [stderr] Downloaded bitflags v1.0.1 [INFO] [stderr] Downloaded serde v1.0.88 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fae68fee19e21819a98ac1bad16a62c91a1013311c32c4fe082661edf21a3338 [INFO] running `Command { std: "docker" "start" "-a" "fae68fee19e21819a98ac1bad16a62c91a1013311c32c4fe082661edf21a3338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fae68fee19e21819a98ac1bad16a62c91a1013311c32c4fe082661edf21a3338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fae68fee19e21819a98ac1bad16a62c91a1013311c32c4fe082661edf21a3338", kill_on_drop: false }` [INFO] [stdout] fae68fee19e21819a98ac1bad16a62c91a1013311c32c4fe082661edf21a3338 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8f5a84e5b24baf37e55b1f3e47ef6107e59456ce02d9a596d49ff58661d4742b [INFO] running `Command { std: "docker" "start" "-a" "8f5a84e5b24baf37e55b1f3e47ef6107e59456ce02d9a596d49ff58661d4742b", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.88 [INFO] [stderr] Checking libc v0.2.37 [INFO] [stderr] Compiling cc v1.0.5 [INFO] [stderr] Compiling cfg-if v0.1.2 [INFO] [stderr] Compiling rustc-demangle v0.1.7 [INFO] [stderr] Compiling winapi v0.2.8 [INFO] [stderr] Compiling num-traits v0.2.1 [INFO] [stderr] Compiling itoa v0.3.4 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling dtoa v0.4.2 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking byteorder v1.2.1 [INFO] [stderr] Compiling pulldown-cmark v0.1.2 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Compiling bitflags v0.9.1 [INFO] [stderr] Compiling same-file v0.1.3 [INFO] [stderr] Compiling glob v0.2.11 [INFO] [stderr] Compiling walkdir v1.0.7 [INFO] [stderr] Compiling remove_dir_all v0.3.0 [INFO] [stderr] Compiling bytecount v0.2.0 [INFO] [stderr] Compiling nix v0.10.0 [INFO] [stderr] Checking term v0.5.1 [INFO] [stderr] Checking encode_unicode v0.3.5 [INFO] [stderr] Checking bitflags v1.0.1 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking bytes v0.4.6 [INFO] [stderr] Checking csv-core v0.1.5 [INFO] [stderr] Compiling backtrace-sys v0.1.16 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Compiling tempdir v0.3.6 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Checking csv v1.0.5 [INFO] [stderr] Compiling semver v0.8.0 [INFO] [stderr] Compiling serde_json v1.0.10 [INFO] [stderr] Checking prettytable-rs v0.8.0 [INFO] [stderr] Checking shrust v0.0.6 [INFO] [stderr] Compiling backtrace v0.3.5 [INFO] [stderr] Compiling error-chain v0.11.0 [INFO] [stderr] Compiling cargo_metadata v0.3.3 [INFO] [stderr] Compiling skeptic v0.13.2 [INFO] [stderr] Compiling i2cdev v0.3.2 [INFO] [stderr] Checking ufire_sht20 v0.9.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:61:45 [INFO] [stdout] | [INFO] [stdout] 61 | pub fn temperature(&mut self) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 61 - pub fn temperature(&mut self) -> Result<(f32), Box> { [INFO] [stdout] 61 + pub fn temperature(&mut self) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:80:42 [INFO] [stdout] | [INFO] [stdout] 80 | pub fn humidity(&mut self) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 80 - pub fn humidity(&mut self) -> Result<(f32), Box> { [INFO] [stdout] 80 + pub fn humidity(&mut self) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:125:62 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 125 - pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box> { [INFO] [stdout] 125 + pub fn _read_register(&mut self, register: u8) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:61:45 [INFO] [stdout] | [INFO] [stdout] 61 | pub fn temperature(&mut self) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 61 - pub fn temperature(&mut self) -> Result<(f32), Box> { [INFO] [stdout] 61 + pub fn temperature(&mut self) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:80:42 [INFO] [stdout] | [INFO] [stdout] 80 | pub fn humidity(&mut self) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 80 - pub fn humidity(&mut self) -> Result<(f32), Box> { [INFO] [stdout] 80 + pub fn humidity(&mut self) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:125:62 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 125 - pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box> { [INFO] [stdout] 125 + pub fn _read_register(&mut self, register: u8) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:14:3 [INFO] [stdout] | [INFO] [stdout] 14 | try!(writeln!(io, "{}", sht20.temperature().unwrap())); [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/main.rs:20:3 [INFO] [stdout] | [INFO] [stdout] 20 | try!(writeln!(io, "{}", sht20.humidity().unwrap())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:14:3 [INFO] [stdout] | [INFO] [stdout] 14 | try!(writeln!(io, "{}", sht20.temperature().unwrap())); [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/main.rs:20:3 [INFO] [stdout] | [INFO] [stdout] 20 | try!(writeln!(io, "{}", sht20.humidity().unwrap())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.03s [INFO] running `Command { std: "docker" "inspect" "8f5a84e5b24baf37e55b1f3e47ef6107e59456ce02d9a596d49ff58661d4742b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f5a84e5b24baf37e55b1f3e47ef6107e59456ce02d9a596d49ff58661d4742b", kill_on_drop: false }` [INFO] [stdout] 8f5a84e5b24baf37e55b1f3e47ef6107e59456ce02d9a596d49ff58661d4742b