[INFO] fetching crate dill 0.8.0...
[INFO] testing dill-0.8.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate dill 0.8.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate dill 0.8.0 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 dill 0.8.0
[INFO] finished tweaking crates.io crate dill 0.8.0
[INFO] tweaked toml for crates.io crate dill 0.8.0 written to /workspace/builds/worker-3-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded multimap v0.9.1
[INFO] [stderr]   Downloaded dill-impl v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c1fc85f76e582e6ce724a0b9d49a75f0c09e2830d0054e8ffbcb8c9dc32749f8
[INFO] running `Command { std: "docker" "start" "-a" "c1fc85f76e582e6ce724a0b9d49a75f0c09e2830d0054e8ffbcb8c9dc32749f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1fc85f76e582e6ce724a0b9d49a75f0c09e2830d0054e8ffbcb8c9dc32749f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1fc85f76e582e6ce724a0b9d49a75f0c09e2830d0054e8ffbcb8c9dc32749f8", kill_on_drop: false }`
[INFO] [stdout] c1fc85f76e582e6ce724a0b9d49a75f0c09e2830d0054e8ffbcb8c9dc32749f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5c57de143708adfb84b0e35b18aece178b5e6abdb3f52bd678c6154b9f1af148
[INFO] running `Command { std: "docker" "start" "-a" "5c57de143708adfb84b0e35b18aece178b5e6abdb3f52bd678c6154b9f1af148", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling multimap v0.9.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling dill-impl v0.8.0
[INFO] [stderr]    Compiling dill v0.8.0 (/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(unsize)]
[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(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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unsize)]
[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 `dill` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "5c57de143708adfb84b0e35b18aece178b5e6abdb3f52bd678c6154b9f1af148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c57de143708adfb84b0e35b18aece178b5e6abdb3f52bd678c6154b9f1af148", kill_on_drop: false }`
[INFO] [stdout] 5c57de143708adfb84b0e35b18aece178b5e6abdb3f52bd678c6154b9f1af148
