Dec 05 13:36:57.200 INFO checking fstream-0.1.2 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 13:36:57.200 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:36:57.429 INFO [stdout] 18d47f9fc5bcc7143def908012db8dcc1ca3093b70ba2649ad2f402f2878d7a9
Dec 05 13:36:57.435 INFO running `"docker" "start" "-a" "18d47f9fc5bcc7143def908012db8dcc1ca3093b70ba2649ad2f402f2878d7a9"`
Dec 05 13:36:58.251 INFO [stderr] usermod: no changes
Dec 05 13:36:58.323 INFO [stderr]     Checking fstream v0.1.2 (/source)
Dec 05 13:36:59.219 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.219 INFO [stderr]   --> src/lib.rs:21:13
Dec 05 13:36:59.219 INFO [stderr]    |
Dec 05 13:36:59.219 INFO [stderr] 21 |             file.read_to_end(&mut data);
Dec 05 13:36:59.219 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.219 INFO [stderr]    |
Dec 05 13:36:59.219 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:36:59.219 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.219 INFO [stderr] 
Dec 05 13:36:59.219 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.219 INFO [stderr]   --> src/lib.rs:41:13
Dec 05 13:36:59.219 INFO [stderr]    |
Dec 05 13:36:59.219 INFO [stderr] 41 |             file.read_to_string(&mut content);
Dec 05 13:36:59.219 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.219 INFO [stderr]    |
Dec 05 13:36:59.219 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.219 INFO [stderr] 
Dec 05 13:36:59.220 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.220 INFO [stderr]   --> src/lib.rs:61:13
Dec 05 13:36:59.220 INFO [stderr]    |
Dec 05 13:36:59.220 INFO [stderr] 61 |             file.read_to_string(&mut content);
Dec 05 13:36:59.220 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.220 INFO [stderr]    |
Dec 05 13:36:59.220 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.220 INFO [stderr] 
Dec 05 13:36:59.220 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.220 INFO [stderr]   --> src/lib.rs:87:13
Dec 05 13:36:59.220 INFO [stderr]    |
Dec 05 13:36:59.220 INFO [stderr] 87 |             file.read_to_string(&mut content);
Dec 05 13:36:59.220 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.220 INFO [stderr]    |
Dec 05 13:36:59.220 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.220 INFO [stderr] 
Dec 05 13:36:59.623 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.623 INFO [stderr]   --> src/lib.rs:21:13
Dec 05 13:36:59.623 INFO [stderr]    |
Dec 05 13:36:59.623 INFO [stderr] 21 |             file.read_to_end(&mut data);
Dec 05 13:36:59.623 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.623 INFO [stderr]    |
Dec 05 13:36:59.623 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:36:59.623 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.623 INFO [stderr] 
Dec 05 13:36:59.623 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.623 INFO [stderr]   --> src/lib.rs:41:13
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr] 41 |             file.read_to_string(&mut content);
Dec 05 13:36:59.624 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.624 INFO [stderr] 
Dec 05 13:36:59.624 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.624 INFO [stderr]   --> src/lib.rs:61:13
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr] 61 |             file.read_to_string(&mut content);
Dec 05 13:36:59.624 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.624 INFO [stderr] 
Dec 05 13:36:59.624 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:36:59.624 INFO [stderr]   --> src/lib.rs:87:13
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr] 87 |             file.read_to_string(&mut content);
Dec 05 13:36:59.624 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:36:59.624 INFO [stderr]    |
Dec 05 13:36:59.624 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:36:59.624 INFO [stderr] 
Dec 05 13:36:59.664 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 05 13:36:59.671 INFO [stderr] su: No module specific data is present
Dec 05 13:37:00.303 INFO running `"docker" "inspect" "18d47f9fc5bcc7143def908012db8dcc1ca3093b70ba2649ad2f402f2878d7a9"`
Dec 05 13:37:00.497 INFO running `"docker" "rm" "-f" "18d47f9fc5bcc7143def908012db8dcc1ca3093b70ba2649ad2f402f2878d7a9"`
Dec 05 13:37:00.772 INFO [stdout] 18d47f9fc5bcc7143def908012db8dcc1ca3093b70ba2649ad2f402f2878d7a9