Dec 14 19:31:30.700 INFO testing slog-html-0.1.3 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 19:31:30.700 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 19:31:31.051 INFO [stdout] 120fad204f635307bcbb76661b79609247aefa0289e9bea6c355d1ca7cfac19e
Dec 14 19:31:31.056 INFO running `"docker" "start" "-a" "120fad204f635307bcbb76661b79609247aefa0289e9bea6c355d1ca7cfac19e"`
Dec 14 19:31:32.064 INFO [stderr] usermod: no changes
Dec 14 19:31:32.195 INFO [stderr]    Compiling slog-html v0.1.3 (/source)
Dec 14 19:31:33.249 INFO [stderr] warning: unused `#[macro_use]` import
Dec 14 19:31:33.249 INFO [stderr]   --> src/lib.rs:84:1
Dec 14 19:31:33.249 INFO [stderr]    |
Dec 14 19:31:33.250 INFO [stderr] 84 | #[macro_use]
Dec 14 19:31:33.250 INFO [stderr]    | ^^^^^^^^^^^^
Dec 14 19:31:33.250 INFO [stderr]    |
Dec 14 19:31:33.250 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 19:31:33.250 INFO [stderr] 
Dec 14 19:31:33.359 INFO [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
Dec 14 19:31:33.359 INFO [stderr]    --> src/lib.rs:246:54
Dec 14 19:31:33.359 INFO [stderr]     |
Dec 14 19:31:33.359 INFO [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
Dec 14 19:31:33.359 INFO [stderr]     |                                                      ^^^^^^
Dec 14 19:31:33.359 INFO [stderr]     |
Dec 14 19:31:33.359 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 14 19:31:33.359 INFO [stderr] 
Dec 14 19:31:33.483 INFO [stderr] warning: variable does not need to be mutable
Dec 14 19:31:33.483 INFO [stderr]    --> src/lib.rs:160:14
Dec 14 19:31:33.483 INFO [stderr]     |
Dec 14 19:31:33.483 INFO [stderr] 160 |         let (mut io, _) = serializer.finish();
Dec 14 19:31:33.483 INFO [stderr]     |              ----^^
Dec 14 19:31:33.483 INFO [stderr]     |              |
Dec 14 19:31:33.483 INFO [stderr]     |              help: remove this `mut`
Dec 14 19:31:33.483 INFO [stderr]     |
Dec 14 19:31:33.483 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 19:31:33.483 INFO [stderr] 
Dec 14 19:31:33.491 INFO [stderr] warning: variable does not need to be mutable
Dec 14 19:31:33.491 INFO [stderr]    --> src/lib.rs:209:14
Dec 14 19:31:33.491 INFO [stderr]     |
Dec 14 19:31:33.491 INFO [stderr] 209 |         let (mut io, _) = serializer.finish();
Dec 14 19:31:33.491 INFO [stderr]     |              ----^^
Dec 14 19:31:33.491 INFO [stderr]     |              |
Dec 14 19:31:33.491 INFO [stderr]     |              help: remove this `mut`
Dec 14 19:31:33.491 INFO [stderr] 
Dec 14 19:31:33.870 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
Dec 14 19:31:33.871 INFO [stderr] su: No module specific data is present
Dec 14 19:31:34.418 INFO running `"docker" "inspect" "120fad204f635307bcbb76661b79609247aefa0289e9bea6c355d1ca7cfac19e"`
Dec 14 19:31:34.683 INFO running `"docker" "rm" "-f" "120fad204f635307bcbb76661b79609247aefa0289e9bea6c355d1ca7cfac19e"`
Dec 14 19:31:34.887 INFO [stdout] 120fad204f635307bcbb76661b79609247aefa0289e9bea6c355d1ca7cfac19e
Dec 14 19:31:34.889 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 19:31:35.389 INFO [stdout] f9b4620382b664a7b501e93994690e6c78896c6c260d61b486e142109366bd56
Dec 14 19:31:35.391 INFO running `"docker" "start" "-a" "f9b4620382b664a7b501e93994690e6c78896c6c260d61b486e142109366bd56"`
Dec 14 19:31:36.422 INFO [stderr] usermod: no changes
Dec 14 19:31:36.505 INFO [stderr]    Compiling slog-html v0.1.3 (/source)
Dec 14 19:31:38.774 INFO [stderr] warning: unused `#[macro_use]` import
Dec 14 19:31:38.775 INFO [stderr]   --> src/lib.rs:84:1
Dec 14 19:31:38.775 INFO [stderr]    |
Dec 14 19:31:38.775 INFO [stderr] 84 | #[macro_use]
Dec 14 19:31:38.775 INFO [stderr]    | ^^^^^^^^^^^^
Dec 14 19:31:38.775 INFO [stderr]    |
Dec 14 19:31:38.775 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 19:31:38.775 INFO [stderr] 
Dec 14 19:31:38.963 INFO [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
Dec 14 19:31:38.964 INFO [stderr]    --> src/lib.rs:246:54
Dec 14 19:31:38.964 INFO [stderr]     |
Dec 14 19:31:38.964 INFO [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
Dec 14 19:31:38.964 INFO [stderr]     |                                                      ^^^^^^
Dec 14 19:31:38.964 INFO [stderr]     |
Dec 14 19:31:38.964 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 14 19:31:38.971 INFO [stderr] 
Dec 14 19:31:39.587 INFO [stderr] warning: variable does not need to be mutable
Dec 14 19:31:39.587 INFO [stderr]    --> src/lib.rs:160:14
Dec 14 19:31:39.587 INFO [stderr]     |
Dec 14 19:31:39.587 INFO [stderr] 160 |         let (mut io, _) = serializer.finish();
Dec 14 19:31:39.587 INFO [stderr]     |              ----^^
Dec 14 19:31:39.587 INFO [stderr]     |              |
Dec 14 19:31:39.587 INFO [stderr]     |              help: remove this `mut`
Dec 14 19:31:39.587 INFO [stderr]     |
Dec 14 19:31:39.587 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 19:31:39.587 INFO [stderr] 
Dec 14 19:31:39.599 INFO [stderr] warning: variable does not need to be mutable
Dec 14 19:31:39.599 INFO [stderr]    --> src/lib.rs:209:14
Dec 14 19:31:39.599 INFO [stderr]     |
Dec 14 19:31:39.599 INFO [stderr] 209 |         let (mut io, _) = serializer.finish();
Dec 14 19:31:39.599 INFO [stderr]     |              ----^^
Dec 14 19:31:39.599 INFO [stderr]     |              |
Dec 14 19:31:39.599 INFO [stderr]     |              help: remove this `mut`
Dec 14 19:31:39.599 INFO [stderr] 
Dec 14 19:31:40.732 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
Dec 14 19:31:40.741 INFO [stderr] su: No module specific data is present
Dec 14 19:31:41.249 INFO running `"docker" "inspect" "f9b4620382b664a7b501e93994690e6c78896c6c260d61b486e142109366bd56"`
Dec 14 19:31:41.541 INFO running `"docker" "rm" "-f" "f9b4620382b664a7b501e93994690e6c78896c6c260d61b486e142109366bd56"`
Dec 14 19:31:41.682 INFO [stdout] f9b4620382b664a7b501e93994690e6c78896c6c260d61b486e142109366bd56