[INFO] fetching crate dyn-slice 3.2.2...
[INFO] testing dyn-slice-3.2.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate dyn-slice 3.2.2 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate dyn-slice 3.2.2
[INFO] finished tweaking crates.io crate dyn-slice 3.2.2
[INFO] tweaked toml for crates.io crate dyn-slice 3.2.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dyn-slice 3.2.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dyn-slice 3.2.2 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `edition` is set on library `dyn_slice` which is deprecated
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.85
[INFO] [stderr]   Downloaded basic-toml v0.1.4
[INFO] [stderr]   Downloaded dissimilar v1.0.7
[INFO] [stderr]   Downloaded syn v2.0.42
[INFO] [stderr]   Downloaded dyn-slice-macros v3.2.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3f3f0e652d5b615e4c70663a7516000e244b466f74ab990b87149ac1894c232
[INFO] running `Command { std: "docker" "start" "-a" "a3f3f0e652d5b615e4c70663a7516000e244b466f74ab990b87149ac1894c232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3f3f0e652d5b615e4c70663a7516000e244b466f74ab990b87149ac1894c232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3f3f0e652d5b615e4c70663a7516000e244b466f74ab990b87149ac1894c232", kill_on_drop: false }`
[INFO] [stdout] a3f3f0e652d5b615e4c70663a7516000e244b466f74ab990b87149ac1894c232
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a8a14c3522f3bcf87cf5e1be5948cb49e107463c59d905b20ddd088bd18de25
[INFO] running `Command { std: "docker" "start" "-a" "9a8a14c3522f3bcf87cf5e1be5948cb49e107463c59d905b20ddd088bd18de25", kill_on_drop: false }`
[INFO] [stderr] warning: `edition` is set on library `dyn_slice` which is deprecated
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.42
[INFO] [stderr]    Compiling dyn-slice-macros v3.2.0
[INFO] [stderr]    Compiling dyn-slice v3.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(ptr_metadata, pointer_byte_offsets)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_byte_offsets` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> lib/lib.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(ptr_metadata, pointer_byte_offsets)]
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dyn-slice` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9a8a14c3522f3bcf87cf5e1be5948cb49e107463c59d905b20ddd088bd18de25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a8a14c3522f3bcf87cf5e1be5948cb49e107463c59d905b20ddd088bd18de25", kill_on_drop: false }`
[INFO] [stdout] 9a8a14c3522f3bcf87cf5e1be5948cb49e107463c59d905b20ddd088bd18de25