[INFO] crate treediff 3.0.1 is already in cache
[INFO] extracting crate treediff 3.0.1 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/treediff/3.0.1
[INFO] extracting crate treediff 3.0.1 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/treediff/3.0.1
[INFO] validating manifest of treediff-3.0.1 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of treediff-3.0.1 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing treediff-3.0.1
[INFO] finished frobbing treediff-3.0.1
[INFO] frobbed toml for treediff-3.0.1 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/treediff/3.0.1/Cargo.toml
[INFO] started frobbing treediff-3.0.1
[INFO] finished frobbing treediff-3.0.1
[INFO] frobbed toml for treediff-3.0.1 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/treediff/3.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking treediff-3.0.1 against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-0/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/treediff/3.0.1:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e6d3c0baf3befba05c1c7a0f7d5aa7aab626f4a80fa89ebf6d9e636642f221ba
[INFO] running `"docker" "start" "-a" "e6d3c0baf3befba05c1c7a0f7d5aa7aab626f4a80fa89ebf6d9e636642f221ba"`
[INFO] [stderr]     Checking treediff v3.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/traitdef.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn items<'a>(&'a self) -> Option<Box<Iterator<Item = (Self::Key, &'a Self::Item)> + 'a>>;
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (Self::Key, &'a Self::Item)> + 'a`
[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/traitdef.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn items<'a>(&'a self) -> Option<Box<Iterator<Item = (Self::Key, &'a Self::Item)> + 'a>>;
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (Self::Key, &'a Self::Item)> + 'a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> tests/merge.rs:3:1
[INFO] [stderr]     |
[INFO] [stderr] 3   | / macro_rules! make_suite {
[INFO] [stderr] 4   | | () => {
[INFO] [stderr] 5   | |     use treediff::diff;
[INFO] [stderr] 6   | |     use treediff::tools::{MutableFilter, Merger};
[INFO] [stderr] ...   |
[INFO] [stderr] 166 | | }
[INFO] [stderr] 167 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> tests/json_value.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / macro_rules! make_suite {
[INFO] [stderr] 4  | | ($bool:expr) => {
[INFO] [stderr] 5  | |     use treediff::Value;
[INFO] [stderr] 6  | |     use treediff::value::Key;
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | | };
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "e6d3c0baf3befba05c1c7a0f7d5aa7aab626f4a80fa89ebf6d9e636642f221ba"`
[INFO] running `"docker" "rm" "-f" "e6d3c0baf3befba05c1c7a0f7d5aa7aab626f4a80fa89ebf6d9e636642f221ba"`
[INFO] [stdout] e6d3c0baf3befba05c1c7a0f7d5aa7aab626f4a80fa89ebf6d9e636642f221ba