[INFO] fetching crate fluent-syntax 0.9.0...
[INFO] extracting crate fluent-syntax 0.9.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/fluent-syntax/0.9.0
[INFO] extracting crate fluent-syntax 0.9.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/fluent-syntax/0.9.0
[INFO] validating manifest of fluent-syntax-0.9.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fluent-syntax-0.9.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fluent-syntax-0.9.0
[INFO] finished frobbing fluent-syntax-0.9.0
[INFO] frobbed toml for fluent-syntax-0.9.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/fluent-syntax/0.9.0/Cargo.toml
[INFO] started frobbing fluent-syntax-0.9.0
[INFO] finished frobbing fluent-syntax-0.9.0
[INFO] frobbed toml for fluent-syntax-0.9.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/fluent-syntax/0.9.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking fluent-syntax-0.9.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/fluent-syntax/0.9.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e278e4c38aeddb8236dd205c5a8254bd7f663fc2a74aa1eaf8c09c3066510e12
[INFO] running `"docker" "start" "-a" "e278e4c38aeddb8236dd205c5a8254bd7f663fc2a74aa1eaf8c09c3066510e12"`
[INFO] [stderr]     Checking fluent-syntax v0.9.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking assert-json-diff v1.0.0
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/ast/mod.rs:8:68
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn serialize<'s>(res: &'s ast::Resource) -> Result<String, Box<Error>> {
[INFO] [stderr]   |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[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]   --> tests/ast/mod.rs:14:84
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn _serialize_to_pretty_json<'s>(res: &'s ast::Resource) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `"docker" "inspect" "e278e4c38aeddb8236dd205c5a8254bd7f663fc2a74aa1eaf8c09c3066510e12"`
[INFO] running `"docker" "rm" "-f" "e278e4c38aeddb8236dd205c5a8254bd7f663fc2a74aa1eaf8c09c3066510e12"`
[INFO] [stdout] e278e4c38aeddb8236dd205c5a8254bd7f663fc2a74aa1eaf8c09c3066510e12