[INFO] fetching crate t3 0.0.4...
[INFO] testing t3-0.0.4 against 1.75.0 for beta-1.76-1
[INFO] extracting crate t3 0.0.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate t3 0.0.4 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate t3 0.0.4
[INFO] finished tweaking crates.io crate t3 0.0.4
[INFO] tweaked toml for crates.io crate t3 0.0.4 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" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-stackdriver v0.8.0
[INFO] [stderr]   Downloaded loginit v0.1.8
[INFO] [stderr]   Downloaded envport v0.1.0
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca031882f179380cf2f8a707d4976356fdf6f059c26c84f89cc5de81e04d5f41
[INFO] running `Command { std: "docker" "start" "-a" "ca031882f179380cf2f8a707d4976356fdf6f059c26c84f89cc5de81e04d5f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca031882f179380cf2f8a707d4976356fdf6f059c26c84f89cc5de81e04d5f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca031882f179380cf2f8a707d4976356fdf6f059c26c84f89cc5de81e04d5f41", kill_on_drop: false }`
[INFO] [stdout] ca031882f179380cf2f8a707d4976356fdf6f059c26c84f89cc5de81e04d5f41
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 145da79d177f105ee1c004f66f0838512d2c49d6f05bd70fe5bdbd49c468b700
[INFO] running `Command { std: "docker" "start" "-a" "145da79d177f105ee1c004f66f0838512d2c49d6f05bd70fe5bdbd49c468b700", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling zstd-safe v7.0.0
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]    Compiling socket2 v0.5.5
[INFO] [stderr]    Compiling mio v0.8.10
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling tower-layer v0.3.2
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling axum v0.6.20
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling tokio v1.35.1
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling sync_wrapper v0.1.2
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling matchit v0.7.3
[INFO] [stderr]    Compiling http-range-header v0.3.1
[INFO] [stderr]    Compiling coarsetime v0.1.33
[INFO] [stderr]    Compiling envport v0.1.0
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling serde_path_to_error v0.1.15
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling prost-derive v0.12.3
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling prost v0.12.3
[INFO] [stderr]    Compiling zstd v0.13.0
[INFO] [stderr]    Compiling async-compression v0.4.5
[INFO] [stderr]    Compiling loginit v0.1.8
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling hyper v0.14.28
[INFO] [stderr]    Compiling tower v0.4.13
[INFO] [stderr]    Compiling tower-http v0.4.4
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling t3 v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(impl_trait_in_assoc_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `t3` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "145da79d177f105ee1c004f66f0838512d2c49d6f05bd70fe5bdbd49c468b700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "145da79d177f105ee1c004f66f0838512d2c49d6f05bd70fe5bdbd49c468b700", kill_on_drop: false }`
[INFO] [stdout] 145da79d177f105ee1c004f66f0838512d2c49d6f05bd70fe5bdbd49c468b700
