Nov 27 23:05:24.866 INFO checking panzi/rust-ubend against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 27 23:05:24.866 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 27 23:05:25.294 INFO [stdout] 807c31d66b38e2ac92e519584069bb993b2eb61bc5f95b4e5743759b0528164d
Nov 27 23:05:25.298 INFO running `"docker" "start" "-a" "807c31d66b38e2ac92e519584069bb993b2eb61bc5f95b4e5743759b0528164d"`
Nov 27 23:05:26.852 INFO [stderr] usermod: no changes
Nov 27 23:05:26.913 INFO [stderr]     Checking libc v0.2.43
Nov 27 23:05:28.304 INFO [stderr]     Checking ubend v0.2.1 (/source)
Nov 27 23:05:30.095 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 23:05:30.095 INFO [stderr]    --> tests/main.rs:180:3
Nov 27 23:05:30.095 INFO [stderr]     |
Nov 27 23:05:30.095 INFO [stderr] 180 |         write!(stream, "hello world");
Nov 27 23:05:30.095 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 23:05:30.095 INFO [stderr]     |
Nov 27 23:05:30.095 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 27 23:05:30.095 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 23:05:30.095 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 23:05:30.095 INFO [stderr] 
Nov 27 23:05:30.095 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 23:05:30.095 INFO [stderr]    --> tests/main.rs:211:3
Nov 27 23:05:30.095 INFO [stderr]     |
Nov 27 23:05:30.095 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Nov 27 23:05:30.095 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 23:05:30.095 INFO [stderr]     |
Nov 27 23:05:30.095 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 23:05:30.095 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 23:05:30.095 INFO [stderr] 
Nov 27 23:05:30.114 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
Nov 27 23:05:30.117 INFO [stderr] su: No module specific data is present
Nov 27 23:05:30.953 INFO running `"docker" "inspect" "807c31d66b38e2ac92e519584069bb993b2eb61bc5f95b4e5743759b0528164d"`
Nov 27 23:05:31.189 INFO running `"docker" "rm" "-f" "807c31d66b38e2ac92e519584069bb993b2eb61bc5f95b4e5743759b0528164d"`
Nov 27 23:05:31.483 INFO [stdout] 807c31d66b38e2ac92e519584069bb993b2eb61bc5f95b4e5743759b0528164d