[INFO] crate fluent-bundle 0.8.0 is already in cache
[INFO] checking fluent-bundle-0.8.0 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate fluent-bundle 0.8.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fluent-bundle 0.8.0 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fluent-bundle 0.8.0
[INFO] finished tweaking crates.io crate fluent-bundle 0.8.0
[INFO] tweaked toml for crates.io crate fluent-bundle 0.8.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate fluent-bundle 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 50f25dfb2b68ef08ab3f13d99b1065b041beb0059f1097e16dcb7db4770d1fad
[INFO] running `"docker" "start" "-a" "50f25dfb2b68ef08ab3f13d99b1065b041beb0059f1097e16dcb7db4770d1fad"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling tinystr v0.3.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking fluent-syntax v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]    Compiling unic-langid-impl v0.6.0
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling proc-macro-hack v0.5.10
[INFO] [stderr]    Compiling rental-impl v0.5.5
[INFO] [stderr]    Compiling unic-langid-macros-impl v0.6.0
[INFO] [stderr]     Checking unic-langid-macros v0.6.0
[INFO] [stderr]     Checking unic-langid v0.6.1
[INFO] [stderr]     Checking intl_pluralrules v4.0.0
[INFO] [stderr]     Checking fluent-locale v0.10.0
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking rental v0.5.5
[INFO] [stderr]     Checking fluent-bundle v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] error[E0277]: cannot add `&std::borrow::Cow<'_, str>` to `std::string::String`
[INFO] [stderr]    --> tests/resolver_fixtures.rs:138:59
[INFO] [stderr]     |
[INFO] [stderr] 138 |                         .fold(String::new(), |acc, x| acc + &x.to_string())
[INFO] [stderr]     |                                                           ^ no implementation for `std::string::String + &std::borrow::Cow<'_, str>`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::ops::Add<&std::borrow::Cow<'_, str>>` is not implemented for `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `fluent-bundle`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "50f25dfb2b68ef08ab3f13d99b1065b041beb0059f1097e16dcb7db4770d1fad"`
[INFO] running `"docker" "rm" "-f" "50f25dfb2b68ef08ab3f13d99b1065b041beb0059f1097e16dcb7db4770d1fad"`
[INFO] [stdout] 50f25dfb2b68ef08ab3f13d99b1065b041beb0059f1097e16dcb7db4770d1fad