Dec 11 20:14:43.933 INFO checking dalance/flexlint against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:14:43.933 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 20:14:44.436 INFO [stdout] dcf288ffc764a0cf5354be43913aa6c02a9c108e15e2744ffa76d71044f92381
Dec 11 20:14:44.442 INFO running `"docker" "start" "-a" "dcf288ffc764a0cf5354be43913aa6c02a9c108e15e2744ffa76d71044f92381"`
Dec 11 20:14:46.036 INFO [stderr] usermod: no changes
Dec 11 20:14:46.204 INFO [stderr]     Checking colored v1.6.1
Dec 11 20:14:46.204 INFO [stderr]    Compiling quote v0.6.3
Dec 11 20:14:47.696 INFO [stderr]    Compiling syn v0.14.9
Dec 11 20:14:58.232 INFO [stderr]    Compiling synstructure v0.9.0
Dec 11 20:14:58.232 INFO [stderr]    Compiling structopt-derive v0.2.10
Dec 11 20:14:58.236 INFO [stderr]    Compiling serde_derive v1.0.66
Dec 11 20:15:05.608 INFO [stderr]    Compiling failure_derive v0.1.2
Dec 11 20:15:06.372 INFO [stderr]     Checking structopt v0.2.10
Dec 11 20:15:10.178 INFO [stderr]     Checking failure v0.1.2
Dec 11 20:15:20.748 INFO [stderr]     Checking flexlint v0.2.5-pre (/source)
Dec 11 20:15:24.591 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:15:24.591 INFO [stderr]    --> src/printer.rs:127:13
Dec 11 20:15:24.591 INFO [stderr]     |
Dec 11 20:15:24.591 INFO [stderr] 127 |             write!(term, "{}", dat);
Dec 11 20:15:24.591 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:15:24.591 INFO [stderr]     |
Dec 11 20:15:24.591 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 20:15:24.591 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:15:24.591 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)
Dec 11 20:15:24.591 INFO [stderr] 
Dec 11 20:15:25.014 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:15:25.014 INFO [stderr]    --> src/printer.rs:127:13
Dec 11 20:15:25.014 INFO [stderr]     |
Dec 11 20:15:25.014 INFO [stderr] 127 |             write!(term, "{}", dat);
Dec 11 20:15:25.014 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:15:25.014 INFO [stderr]     |
Dec 11 20:15:25.014 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 20:15:25.014 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:15:25.014 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)
Dec 11 20:15:25.014 INFO [stderr] 
Dec 11 20:15:25.058 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.99s
Dec 11 20:15:25.074 INFO [stderr] su: No module specific data is present
Dec 11 20:15:26.024 INFO running `"docker" "inspect" "dcf288ffc764a0cf5354be43913aa6c02a9c108e15e2744ffa76d71044f92381"`
Dec 11 20:15:26.353 INFO running `"docker" "rm" "-f" "dcf288ffc764a0cf5354be43913aa6c02a9c108e15e2744ffa76d71044f92381"`
Dec 11 20:15:26.626 INFO [stdout] dcf288ffc764a0cf5354be43913aa6c02a9c108e15e2744ffa76d71044f92381