[INFO] fetching crate case 1.0.0...
[INFO] checking case-1.0.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate case 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate case 1.0.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate case 1.0.0
[INFO] finished tweaking crates.io crate case 1.0.0
[INFO] tweaked toml for crates.io crate case 1.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e51c0c7d05841cc7226672e27148cf565e046e97f711e3331b39f4d95225eab
[INFO] running `Command { std: "docker" "start" "-a" "4e51c0c7d05841cc7226672e27148cf565e046e97f711e3331b39f4d95225eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e51c0c7d05841cc7226672e27148cf565e046e97f711e3331b39f4d95225eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e51c0c7d05841cc7226672e27148cf565e046e97f711e3331b39f4d95225eab", kill_on_drop: false }`
[INFO] [stdout] 4e51c0c7d05841cc7226672e27148cf565e046e97f711e3331b39f4d95225eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bdf4a7f93066a5c051d99f31976b2e608c27374dca26e26f992dcf32f289e17
[INFO] running `Command { std: "docker" "start" "-a" "9bdf4a7f93066a5c051d99f31976b2e608c27374dca26e26f992dcf32f289e17", kill_on_drop: false }`
[INFO] [stderr]     Checking case v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> benches/bench.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     b.iter(|| CaseExt::to_lowercase("MY favorite STRING"));
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |     b.iter(|| <dyn CaseExt>::to_lowercase("MY favorite STRING"));
[INFO] [stdout]    |               ++++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0191]: the value of the associated type `Owned` in `CaseExt` must be specified
[INFO] [stdout]   --> benches/bench.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     b.iter(|| CaseExt::to_lowercase("MY favorite STRING"));
[INFO] [stdout]    |               ^^^^^^^ help: specify the associated type: `CaseExt<Owned = Type>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `to_lowercase` found for trait object `dyn CaseExt` in the current scope
[INFO] [stdout]   --> benches/bench.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     b.iter(|| CaseExt::to_lowercase("MY favorite STRING"));
[INFO] [stdout]    |                        ^^^^^^^^^^^^ function or associated item not found in `dyn CaseExt`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `to_camel_lowercase` with a similar name, but with different arguments
[INFO] [stdout]   --> /opt/rustwide/workdir/src/lib.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn to_camel_lowercase(&self) -> Self::Owned;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> benches/bench.rs:36:15
[INFO] [stdout]    |
[INFO] [stdout] 36 |     b.iter(|| CaseExt::to_uppercase("my_favorite_string"));
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     b.iter(|| <dyn CaseExt>::to_uppercase("my_favorite_string"));
[INFO] [stdout]    |               ++++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0191]: the value of the associated type `Owned` in `CaseExt` must be specified
[INFO] [stdout]   --> benches/bench.rs:36:15
[INFO] [stdout]    |
[INFO] [stdout] 36 |     b.iter(|| CaseExt::to_uppercase("my_favorite_string"));
[INFO] [stdout]    |               ^^^^^^^ help: specify the associated type: `CaseExt<Owned = Type>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `to_uppercase` found for trait object `dyn CaseExt` in the current scope
[INFO] [stdout]   --> benches/bench.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |     b.iter(|| CaseExt::to_uppercase("my_favorite_string"));
[INFO] [stdout]    |                        ^^^^^^^^^^^^ function or associated item not found in `dyn CaseExt`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an associated function `to_vec` with a similar name
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/alloc/src/slice.rs:116:9
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0191, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0191`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `case` (bench "bench") due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9bdf4a7f93066a5c051d99f31976b2e608c27374dca26e26f992dcf32f289e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bdf4a7f93066a5c051d99f31976b2e608c27374dca26e26f992dcf32f289e17", kill_on_drop: false }`
[INFO] [stdout] 9bdf4a7f93066a5c051d99f31976b2e608c27374dca26e26f992dcf32f289e17