[INFO] crate matrix_bot_api 0.4.0 is already in cache
[INFO] extracting crate matrix_bot_api 0.4.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/matrix_bot_api/0.4.0
[INFO] extracting crate matrix_bot_api 0.4.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/matrix_bot_api/0.4.0
[INFO] validating manifest of matrix_bot_api-0.4.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matrix_bot_api-0.4.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matrix_bot_api-0.4.0
[INFO] finished frobbing matrix_bot_api-0.4.0
[INFO] frobbed toml for matrix_bot_api-0.4.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/matrix_bot_api/0.4.0/Cargo.toml
[INFO] started frobbing matrix_bot_api-0.4.0
[INFO] finished frobbing matrix_bot_api-0.4.0
[INFO] frobbed toml for matrix_bot_api-0.4.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/matrix_bot_api/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking matrix_bot_api-0.4.0 against try#8ec8125bea94852768b56958f05da47666c21ab0 for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-7/try#8ec8125bea94852768b56958f05da47666c21ab0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/matrix_bot_api/0.4.0:/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" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3c2e34f79862f51d3e0e392fffc588d777c8c1362e9e8aca86679adaf0821eb0
[INFO] running `"docker" "start" "-a" "3c2e34f79862f51d3e0e392fffc588d777c8c1362e9e8aca86679adaf0821eb0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cairo-rs v0.5.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.7.0
[INFO] [stderr]     Checking glib v0.6.1
[INFO] [stderr]     Checking config v0.9.3
[INFO] [stderr]     Checking fractal-matrix-api v4.0.0
[INFO] [stderr]     Checking matrix_bot_api v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:73:30
[INFO] [stderr]    |
[INFO] [stderr] 73 |     handlers: Option<Vec<Box<MessageHandler>>>,
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn MessageHandler`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:73:30
[INFO] [stderr]    |
[INFO] [stderr] 73 |     handlers: Option<Vec<Box<MessageHandler>>>,
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn MessageHandler`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:226:25
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     for mut handler in &mut handlers {
[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:226:25
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     for mut handler in &mut handlers {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 14.42s
[INFO] running `"docker" "inspect" "3c2e34f79862f51d3e0e392fffc588d777c8c1362e9e8aca86679adaf0821eb0"`
[INFO] running `"docker" "rm" "-f" "3c2e34f79862f51d3e0e392fffc588d777c8c1362e9e8aca86679adaf0821eb0"`
[INFO] [stdout] 3c2e34f79862f51d3e0e392fffc588d777c8c1362e9e8aca86679adaf0821eb0