Dec 18 10:40:20.421 INFO checking subunit-rust-0.1.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:40:20.421 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:40:20.862 INFO [stdout] 49ea3150c6976f8715bbaaf5e6ac15e0464e3488254e5af34cde274e3fc28c6a
Dec 18 10:40:20.870 INFO running `"docker" "start" "-a" "49ea3150c6976f8715bbaaf5e6ac15e0464e3488254e5af34cde274e3fc28c6a"`
Dec 18 10:40:22.853 INFO [stderr]     Checking subunit-rust v0.1.2 (/opt/crater/workdir)
Dec 18 10:40:23.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.608 INFO [stderr]    --> src/lib.rs:177:9
Dec 18 10:40:23.608 INFO [stderr]     |
Dec 18 10:40:23.608 INFO [stderr] 177 |         ret.write_u8(value as u8);
Dec 18 10:40:23.608 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.608 INFO [stderr]     |
Dec 18 10:40:23.608 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:40:23.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.608 INFO [stderr] 
Dec 18 10:40:23.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.608 INFO [stderr]    --> src/lib.rs:182:9
Dec 18 10:40:23.608 INFO [stderr]     |
Dec 18 10:40:23.608 INFO [stderr] 182 |         ret.write_u16::<BigEndian>(value as u16 | 0x4000);
Dec 18 10:40:23.609 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.609 INFO [stderr] 
Dec 18 10:40:23.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.609 INFO [stderr]    --> src/lib.rs:187:9
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr] 187 |         ret.write_u8(((value >> 16) | 0x80) as u8);
Dec 18 10:40:23.609 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.609 INFO [stderr] 
Dec 18 10:40:23.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.609 INFO [stderr]    --> src/lib.rs:188:9
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr] 188 |         ret.write_u16::<BigEndian>(value as u16 & 0xffff);
Dec 18 10:40:23.609 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.609 INFO [stderr] 
Dec 18 10:40:23.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.609 INFO [stderr]    --> src/lib.rs:193:9
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr] 193 |         ret.write_u32::<BigEndian>(value | 0xC0000000);
Dec 18 10:40:23.609 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.609 INFO [stderr] 
Dec 18 10:40:23.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.609 INFO [stderr]    --> src/lib.rs:202:5
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr] 202 |     out.write(string.as_bytes());
Dec 18 10:40:23.609 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.609 INFO [stderr]     |
Dec 18 10:40:23.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.609 INFO [stderr] 
Dec 18 10:40:23.628 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.628 INFO [stderr]    --> src/lib.rs:423:13
Dec 18 10:40:23.628 INFO [stderr]     |
Dec 18 10:40:23.628 INFO [stderr] 423 |             file_content.write(self.file_content.as_ref().unwrap());
Dec 18 10:40:23.628 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.628 INFO [stderr]     |
Dec 18 10:40:23.628 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.628 INFO [stderr] 
Dec 18 10:40:23.896 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.896 INFO [stderr]    --> src/lib.rs:177:9
Dec 18 10:40:23.896 INFO [stderr]     |
Dec 18 10:40:23.896 INFO [stderr] 177 |         ret.write_u8(value as u8);
Dec 18 10:40:23.896 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.896 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:40:23.897 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.897 INFO [stderr] 
Dec 18 10:40:23.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.897 INFO [stderr]    --> src/lib.rs:182:9
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr] 182 |         ret.write_u16::<BigEndian>(value as u16 | 0x4000);
Dec 18 10:40:23.897 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.897 INFO [stderr] 
Dec 18 10:40:23.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.897 INFO [stderr]    --> src/lib.rs:187:9
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr] 187 |         ret.write_u8(((value >> 16) | 0x80) as u8);
Dec 18 10:40:23.897 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.897 INFO [stderr] 
Dec 18 10:40:23.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.897 INFO [stderr]    --> src/lib.rs:188:9
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.897 INFO [stderr] 188 |         ret.write_u16::<BigEndian>(value as u16 & 0xffff);
Dec 18 10:40:23.897 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.897 INFO [stderr]     |
Dec 18 10:40:23.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.900 INFO [stderr] 
Dec 18 10:40:23.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.900 INFO [stderr]    --> src/lib.rs:193:9
Dec 18 10:40:23.900 INFO [stderr]     |
Dec 18 10:40:23.900 INFO [stderr] 193 |         ret.write_u32::<BigEndian>(value | 0xC0000000);
Dec 18 10:40:23.900 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.900 INFO [stderr]     |
Dec 18 10:40:23.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.900 INFO [stderr] 
Dec 18 10:40:23.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.900 INFO [stderr]    --> src/lib.rs:202:5
Dec 18 10:40:23.900 INFO [stderr]     |
Dec 18 10:40:23.900 INFO [stderr] 202 |     out.write(string.as_bytes());
Dec 18 10:40:23.900 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.900 INFO [stderr]     |
Dec 18 10:40:23.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.900 INFO [stderr] 
Dec 18 10:40:23.904 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:40:23.904 INFO [stderr]    --> src/lib.rs:423:13
Dec 18 10:40:23.904 INFO [stderr]     |
Dec 18 10:40:23.904 INFO [stderr] 423 |             file_content.write(self.file_content.as_ref().unwrap());
Dec 18 10:40:23.904 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:40:23.904 INFO [stderr]     |
Dec 18 10:40:23.904 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:40:23.904 INFO [stderr] 
Dec 18 10:40:23.930 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
Dec 18 10:40:25.126 INFO running `"docker" "inspect" "49ea3150c6976f8715bbaaf5e6ac15e0464e3488254e5af34cde274e3fc28c6a"`
Dec 18 10:40:25.454 INFO running `"docker" "rm" "-f" "49ea3150c6976f8715bbaaf5e6ac15e0464e3488254e5af34cde274e3fc28c6a"`
Dec 18 10:40:25.692 INFO [stdout] 49ea3150c6976f8715bbaaf5e6ac15e0464e3488254e5af34cde274e3fc28c6a