Dec 17 21:59:18.900 INFO checking jthornber/lvm-rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:59:18.900 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/jthornber/lvm-rust:/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 17 21:59:19.312 INFO [stdout] 98888cdf316a237e1ad1a262e3985f1ee0b756625e08b64cbe8dc35665df0cf2
Dec 17 21:59:19.312 INFO running `"docker" "start" "-a" "98888cdf316a237e1ad1a262e3985f1ee0b756625e08b64cbe8dc35665df0cf2"`
Dec 17 21:59:21.517 INFO [stderr]     Checking yaml-rust v0.3.4
Dec 17 21:59:21.521 INFO [stderr]     Checking nix v0.7.0
Dec 17 21:59:22.946 INFO [stderr]     Checking clap v2.18.0
Dec 17 21:59:29.058 INFO [stderr]     Checking lvm-rust v0.1.0 (/opt/crater/workdir)
Dec 17 21:59:29.192 INFO [stderr] warning: unknown lint: `used_underscore_binding`
Dec 17 21:59:29.192 INFO [stderr]   --> src/device_mapper/low_level.rs:10:10
Dec 17 21:59:29.193 INFO [stderr]    |
Dec 17 21:59:29.193 INFO [stderr] 10 | #![allow(used_underscore_binding)]
Dec 17 21:59:29.193 INFO [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:59:29.193 INFO [stderr]    |
Dec 17 21:59:29.193 INFO [stderr]    = note: #[warn(unknown_lints)] on by default
Dec 17 21:59:29.193 INFO [stderr] 
Dec 17 21:59:29.193 INFO [stderr] warning: unknown lint: `if_not_else`
Dec 17 21:59:29.193 INFO [stderr]   --> src/device_mapper/low_level.rs:11:10
Dec 17 21:59:29.193 INFO [stderr]    |
Dec 17 21:59:29.193 INFO [stderr] 11 | #![allow(if_not_else)]
Dec 17 21:59:29.193 INFO [stderr]    |          ^^^^^^^^^^^
Dec 17 21:59:29.193 INFO [stderr] 
Dec 17 21:59:29.356 INFO [stderr] warning: unknown lint: `used_underscore_binding`
Dec 17 21:59:29.356 INFO [stderr]   --> src/device_mapper/low_level.rs:10:10
Dec 17 21:59:29.356 INFO [stderr]    |
Dec 17 21:59:29.356 INFO [stderr] 10 | #![allow(used_underscore_binding)]
Dec 17 21:59:29.356 INFO [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:59:29.356 INFO [stderr]    |
Dec 17 21:59:29.356 INFO [stderr]    = note: #[warn(unknown_lints)] on by default
Dec 17 21:59:29.356 INFO [stderr] 
Dec 17 21:59:29.356 INFO [stderr] warning: unknown lint: `if_not_else`
Dec 17 21:59:29.356 INFO [stderr]   --> src/device_mapper/low_level.rs:11:10
Dec 17 21:59:29.356 INFO [stderr]    |
Dec 17 21:59:29.356 INFO [stderr] 11 | #![allow(if_not_else)]
Dec 17 21:59:29.356 INFO [stderr]    |          ^^^^^^^^^^^
Dec 17 21:59:29.356 INFO [stderr] 
Dec 17 21:59:30.076 INFO [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
Dec 17 21:59:30.077 INFO [stderr]    --> src/device_mapper/low_level.rs:499:9
Dec 17 21:59:30.077 INFO [stderr]     |
Dec 17 21:59:30.077 INFO [stderr] 499 |         header.flags.insert(DM_SUSPEND);
Dec 17 21:59:30.077 INFO [stderr]     |         ^^^^^^^^^^^^
Dec 17 21:59:30.077 INFO [stderr]     |
Dec 17 21:59:30.077 INFO [stderr]     = note: #[warn(safe_packed_borrows)] on by default
Dec 17 21:59:30.077 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 17 21:59:30.077 INFO [stderr]     = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
Dec 17 21:59:30.077 INFO [stderr]     = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
Dec 17 21:59:30.077 INFO [stderr] 
Dec 17 21:59:30.220 INFO [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
Dec 17 21:59:30.220 INFO [stderr]    --> src/device_mapper/low_level.rs:499:9
Dec 17 21:59:30.220 INFO [stderr]     |
Dec 17 21:59:30.220 INFO [stderr] 499 |         header.flags.insert(DM_SUSPEND);
Dec 17 21:59:30.220 INFO [stderr]     |         ^^^^^^^^^^^^
Dec 17 21:59:30.220 INFO [stderr]     |
Dec 17 21:59:30.220 INFO [stderr]     = note: #[warn(safe_packed_borrows)] on by default
Dec 17 21:59:30.220 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 17 21:59:30.220 INFO [stderr]     = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
Dec 17 21:59:30.220 INFO [stderr]     = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
Dec 17 21:59:30.220 INFO [stderr] 
Dec 17 21:59:30.312 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.97s
Dec 17 21:59:31.307 INFO running `"docker" "inspect" "98888cdf316a237e1ad1a262e3985f1ee0b756625e08b64cbe8dc35665df0cf2"`
Dec 17 21:59:31.550 INFO running `"docker" "rm" "-f" "98888cdf316a237e1ad1a262e3985f1ee0b756625e08b64cbe8dc35665df0cf2"`
Dec 17 21:59:31.955 INFO [stdout] 98888cdf316a237e1ad1a262e3985f1ee0b756625e08b64cbe8dc35665df0cf2