Oct 13 13:21:16.492 INFO checking ipaddr-0.0.3 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 13:21:16.492 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 13:21:16.944 INFO blam! 18e88469b70afc2c0ecd88877e872e8fd5499a498f76bd6b99feb74c3ae5efad
Oct 13 13:21:16.952 INFO running `"docker" "start" "-a" "18e88469b70afc2c0ecd88877e872e8fd5499a498f76bd6b99feb74c3ae5efad"`
Oct 13 13:21:18.543 INFO kablam! usermod: no changes
Oct 13 13:21:18.616 INFO kablam!     Checking ipaddr v0.0.3 (/source)
Oct 13 13:21:21.249 INFO kablam! warning: unused variable: `f`
Oct 13 13:21:21.249 INFO kablam!   --> src/ipv6/network.rs:57:19
Oct 13 13:21:21.249 INFO kablam!    |
Oct 13 13:21:21.249 INFO kablam! 57 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Oct 13 13:21:21.249 INFO kablam!    |                   ^ help: consider using `_f` instead
Oct 13 13:21:21.249 INFO kablam!    |
Oct 13 13:21:21.249 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 13:21:21.249 INFO kablam! 
Oct 13 13:21:21.249 INFO kablam! warning: unused variable: `f`
Oct 13 13:21:21.249 INFO kablam!   --> src/ipv6/network.rs:63:19
Oct 13 13:21:21.249 INFO kablam!    |
Oct 13 13:21:21.249 INFO kablam! 63 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Oct 13 13:21:21.249 INFO kablam!    |                   ^ help: consider using `_f` instead
Oct 13 13:21:21.249 INFO kablam! 
Oct 13 13:21:21.933 INFO kablam! warning: unused variable: `f`
Oct 13 13:21:21.934 INFO kablam!   --> src/ipv6/network.rs:57:19
Oct 13 13:21:21.935 INFO kablam!    |
Oct 13 13:21:21.936 INFO kablam! 57 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Oct 13 13:21:21.936 INFO kablam!    |                   ^ help: consider using `_f` instead
Oct 13 13:21:21.937 INFO kablam!    |
Oct 13 13:21:21.938 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 13:21:21.938 INFO kablam! 
Oct 13 13:21:21.939 INFO kablam! warning: unused variable: `f`
Oct 13 13:21:21.940 INFO kablam!   --> src/ipv6/network.rs:63:19
Oct 13 13:21:21.940 INFO kablam!    |
Oct 13 13:21:21.941 INFO kablam! 63 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Oct 13 13:21:21.942 INFO kablam!    |                   ^ help: consider using `_f` instead
Oct 13 13:21:21.942 INFO kablam! 
Oct 13 13:21:22.224 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 13:21:22.225 INFO kablam!    --> src/ipv6/address/format.rs:451:9
Oct 13 13:21:22.225 INFO kablam!     |
Oct 13 13:21:22.226 INFO kablam! 451 | /         ip.formatter(&mut s)
Oct 13 13:21:22.227 INFO kablam! 452 | |             .upper_case(true)
Oct 13 13:21:22.227 INFO kablam! 453 | |             .ellipsis(false)
Oct 13 13:21:22.228 INFO kablam! 454 | |             .write();
Oct 13 13:21:22.228 INFO kablam!     | |_____________________^
Oct 13 13:21:22.229 INFO kablam!     |
Oct 13 13:21:22.230 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 13:21:22.230 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 13:21:22.231 INFO kablam! 
Oct 13 13:21:22.356 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.79s
Oct 13 13:21:22.359 INFO kablam! su: No module specific data is present
Oct 13 13:21:23.140 INFO running `"docker" "rm" "-f" "18e88469b70afc2c0ecd88877e872e8fd5499a498f76bd6b99feb74c3ae5efad"`
Oct 13 13:21:23.422 INFO blam! 18e88469b70afc2c0ecd88877e872e8fd5499a498f76bd6b99feb74c3ae5efad