[INFO] crate slog-html 0.1.3 is already in cache
[INFO] extracting crate slog-html 0.1.3 into work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/slog-html/0.1.3
[INFO] extracting crate slog-html 0.1.3 into work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/slog-html/0.1.3
[INFO] validating manifest of slog-html-0.1.3 on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slog-html-0.1.3 on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slog-html-0.1.3
[INFO] finished frobbing slog-html-0.1.3
[INFO] frobbed toml for slog-html-0.1.3 written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/slog-html/0.1.3/Cargo.toml
[INFO] started frobbing slog-html-0.1.3
[INFO] finished frobbing slog-html-0.1.3
[INFO] frobbed toml for slog-html-0.1.3 written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/slog-html/0.1.3/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking slog-html-0.1.3 against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-4/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/slog-html/0.1.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0771b70aa2287f47b9ccb9755462400a38ef2479dfda8db62da4ce584d909d07
[INFO] running `"docker" "start" "-a" "0771b70aa2287f47b9ccb9755462400a38ef2479dfda8db62da4ce584d909d07"`
[INFO] [stderr]     Checking slog-html v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stderr]    --> src/lib.rs:246:54
[INFO] [stderr]     |
[INFO] [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stderr]     |                                                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stderr]    --> src/lib.rs:246:54
[INFO] [stderr]     |
[INFO] [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stderr]     |                                                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:160:14
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:209:14
[INFO] [stderr]     |
[INFO] [stderr] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:160:14
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:209:14
[INFO] [stderr]     |
[INFO] [stderr] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `"docker" "inspect" "0771b70aa2287f47b9ccb9755462400a38ef2479dfda8db62da4ce584d909d07"`
[INFO] running `"docker" "rm" "-f" "0771b70aa2287f47b9ccb9755462400a38ef2479dfda8db62da4ce584d909d07"`
[INFO] [stdout] 0771b70aa2287f47b9ccb9755462400a38ef2479dfda8db62da4ce584d909d07