Dec 18 10:40:20.077 INFO checking subunit-rust-0.1.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:40:20.077 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/subunit-rust/0.1.2:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:40:20.512 INFO [stdout] 75cb529b907d441e2319b266081bed8be0401f7bbafab8f3df57dd8a8e4bcdad
Dec 18 10:40:20.518 INFO running `"docker" "start" "-a" "75cb529b907d441e2319b266081bed8be0401f7bbafab8f3df57dd8a8e4bcdad"`
Dec 18 10:40:22.240 INFO [stderr]     Checking subunit-rust v0.1.2 (/opt/crater/workdir)
Dec 18 10:40:22.962 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.963 INFO [stderr]    --> src/lib.rs:177:9
Dec 18 10:40:22.963 INFO [stderr]     |
Dec 18 10:40:22.963 INFO [stderr] 177 |         ret.write_u8(value as u8);
Dec 18 10:40:22.963 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.963 INFO [stderr]     |
Dec 18 10:40:22.963 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:40:22.963 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.963 INFO [stderr] 
Dec 18 10:40:22.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.963 INFO [stderr]    --> src/lib.rs:182:9
Dec 18 10:40:22.963 INFO [stderr]     |
Dec 18 10:40:22.963 INFO [stderr] 182 |         ret.write_u16::<BigEndian>(value as u16 | 0x4000);
Dec 18 10:40:22.963 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.963 INFO [stderr]     |
Dec 18 10:40:22.963 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.963 INFO [stderr] 
Dec 18 10:40:22.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.963 INFO [stderr]    --> src/lib.rs:187:9
Dec 18 10:40:22.963 INFO [stderr]     |
Dec 18 10:40:22.963 INFO [stderr] 187 |         ret.write_u8(((value >> 16) | 0x80) as u8);
Dec 18 10:40:22.964 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.964 INFO [stderr] 
Dec 18 10:40:22.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.964 INFO [stderr]    --> src/lib.rs:188:9
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr] 188 |         ret.write_u16::<BigEndian>(value as u16 & 0xffff);
Dec 18 10:40:22.964 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.964 INFO [stderr] 
Dec 18 10:40:22.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.964 INFO [stderr]    --> src/lib.rs:193:9
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr] 193 |         ret.write_u32::<BigEndian>(value | 0xC0000000);
Dec 18 10:40:22.964 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.964 INFO [stderr] 
Dec 18 10:40:22.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.964 INFO [stderr]    --> src/lib.rs:202:5
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr] 202 |     out.write(string.as_bytes());
Dec 18 10:40:22.964 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.964 INFO [stderr]     |
Dec 18 10:40:22.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.964 INFO [stderr] 
Dec 18 10:40:22.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:22.968 INFO [stderr]    --> src/lib.rs:423:13
Dec 18 10:40:22.968 INFO [stderr]     |
Dec 18 10:40:22.968 INFO [stderr] 423 |             file_content.write(self.file_content.as_ref().unwrap());
Dec 18 10:40:22.968 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:22.968 INFO [stderr]     |
Dec 18 10:40:22.972 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:22.972 INFO [stderr] 
Dec 18 10:40:23.336 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.336 INFO [stderr]    --> src/lib.rs:177:9
Dec 18 10:40:23.336 INFO [stderr]     |
Dec 18 10:40:23.336 INFO [stderr] 177 |         ret.write_u8(value as u8);
Dec 18 10:40:23.336 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.336 INFO [stderr]     |
Dec 18 10:40:23.336 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.337 INFO [stderr]    --> src/lib.rs:182:9
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr] 182 |         ret.write_u16::<BigEndian>(value as u16 | 0x4000);
Dec 18 10:40:23.337 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.337 INFO [stderr]    --> src/lib.rs:187:9
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr] 187 |         ret.write_u8(((value >> 16) | 0x80) as u8);
Dec 18 10:40:23.337 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.337 INFO [stderr]    --> src/lib.rs:188:9
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr] 188 |         ret.write_u16::<BigEndian>(value as u16 & 0xffff);
Dec 18 10:40:23.337 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.337 INFO [stderr]    --> src/lib.rs:193:9
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr] 193 |         ret.write_u32::<BigEndian>(value | 0xC0000000);
Dec 18 10:40:23.337 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.337 INFO [stderr]    --> src/lib.rs:202:5
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr] 202 |     out.write(string.as_bytes());
Dec 18 10:40:23.337 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.337 INFO [stderr]     |
Dec 18 10:40:23.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.337 INFO [stderr] 
Dec 18 10:40:23.342 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.342 INFO [stderr]    --> src/lib.rs:423:13
Dec 18 10:40:23.342 INFO [stderr]     |
Dec 18 10:40:23.342 INFO [stderr] 423 |             file_content.write(self.file_content.as_ref().unwrap());
Dec 18 10:40:23.342 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.342 INFO [stderr]     |
Dec 18 10:40:23.342 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.342 INFO [stderr] 
Dec 18 10:40:23.399 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
Dec 18 10:40:24.911 INFO running `"docker" "inspect" "75cb529b907d441e2319b266081bed8be0401f7bbafab8f3df57dd8a8e4bcdad"`
Dec 18 10:40:25.266 INFO running `"docker" "rm" "-f" "75cb529b907d441e2319b266081bed8be0401f7bbafab8f3df57dd8a8e4bcdad"`
Dec 18 10:40:25.596 INFO [stdout] 75cb529b907d441e2319b266081bed8be0401f7bbafab8f3df57dd8a8e4bcdad