[INFO] fetching crate combined_str 0.4.3...
[INFO] testing combined_str-0.4.3 against 1.95.0 for beta-1.96-1
[INFO] extracting crate combined_str 0.4.3 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate combined_str 0.4.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate combined_str 0.4.3
[INFO] tweaked toml for crates.io crate combined_str 0.4.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate combined_str 0.4.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate combined_str 0.4.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99e3cc6a3ff33d91a17fcc6064a6641f6d7c271ed90d7fc5502f620c527a7f33
[INFO] running `Command { std: "docker" "start" "-a" "99e3cc6a3ff33d91a17fcc6064a6641f6d7c271ed90d7fc5502f620c527a7f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99e3cc6a3ff33d91a17fcc6064a6641f6d7c271ed90d7fc5502f620c527a7f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e3cc6a3ff33d91a17fcc6064a6641f6d7c271ed90d7fc5502f620c527a7f33", kill_on_drop: false }`
[INFO] [stdout] 99e3cc6a3ff33d91a17fcc6064a6641f6d7c271ed90d7fc5502f620c527a7f33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ebbb37176058eb16c44cb35f4f5fff807de406b20c1c3a27a37b29995a79d4a
[INFO] running `Command { std: "docker" "start" "-a" "0ebbb37176058eb16c44cb35f4f5fff807de406b20c1c3a27a37b29995a79d4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling combined_str v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature `new_range_api`
[INFO] [stdout]    --> src/view.rs:451:26
[INFO] [stdout]     |
[INFO] [stdout] 451 | impl_combined_str_index!(core::range::RangeToInclusive<usize>, |s, _len| -> (0, s.last.saturating_add(1)));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #125687 <https://github.com/rust-lang/rust/issues/125687> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `new_range_api`
[INFO] [stdout]   --> src/view.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |     impl Sealed for range::RangeToInclusive<usize> {}
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #125687 <https://github.com/rust-lang/rust/issues/125687> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `new_range_api`
[INFO] [stdout]    --> src/view.rs:451:81
[INFO] [stdout]     |
[INFO] [stdout] 451 | impl_combined_str_index!(core::range::RangeToInclusive<usize>, |s, _len| -> (0, s.last.saturating_add(1)));
[INFO] [stdout]     |                                                                                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #125687 <https://github.com/rust-lang/rust/issues/125687> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `combined_str` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0ebbb37176058eb16c44cb35f4f5fff807de406b20c1c3a27a37b29995a79d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ebbb37176058eb16c44cb35f4f5fff807de406b20c1c3a27a37b29995a79d4a", kill_on_drop: false }`
[INFO] [stdout] 0ebbb37176058eb16c44cb35f4f5fff807de406b20c1c3a27a37b29995a79d4a