[INFO] fetching crate pi_download 0.4.0...
[INFO] testing pi_download-0.4.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate pi_download 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate pi_download 0.4.0
[INFO] finished tweaking crates.io crate pi_download 0.4.0
[INFO] tweaked toml for crates.io crate pi_download 0.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_download 0.4.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pi_download 0.4.0 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ordered-float v3.9.2
[INFO] [stderr]   Downloaded pi_async_file v0.7.0
[INFO] [stderr]   Downloaded event-listener-strategy v0.5.3
[INFO] [stderr]   Downloaded ctor v0.2.9
[INFO] [stderr]   Downloaded pi_enum_default_macro v0.1.0
[INFO] [stderr]   Downloaded pi_share v0.5.0
[INFO] [stderr]   Downloaded pi_rt_file v0.5.0
[INFO] [stderr]   Downloaded tokio-socks v0.5.2
[INFO] [stderr]   Downloaded pi_async_httpc v0.6.0
[INFO] [stderr]   Downloaded pi_time v0.5.1
[INFO] [stderr]   Downloaded time-macros v0.2.21
[INFO] [stderr]   Downloaded cookie v0.17.0
[INFO] [stderr]   Downloaded cookie_store v0.20.0
[INFO] [stderr]   Downloaded brotli-decompressor v4.0.2
[INFO] [stderr]   Downloaded tempfile v3.19.0
[INFO] [stderr]   Downloaded async-compression v0.4.21
[INFO] [stderr]   Downloaded time v0.3.40
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d2f953e6eec3ce285e9421ce7f9cfaa666162e99d403f416452c03675ddf5ca
[INFO] running `Command { std: "docker" "start" "-a" "1d2f953e6eec3ce285e9421ce7f9cfaa666162e99d403f416452c03675ddf5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2f953e6eec3ce285e9421ce7f9cfaa666162e99d403f416452c03675ddf5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2f953e6eec3ce285e9421ce7f9cfaa666162e99d403f416452c03675ddf5ca", kill_on_drop: false }`
[INFO] [stdout] 1d2f953e6eec3ce285e9421ce7f9cfaa666162e99d403f416452c03675ddf5ca
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40bbd079b372b722ad1a596d58d9fefaa1f100c2a9307f4942d762ff9f3240b1
[INFO] running `Command { std: "docker" "start" "-a" "40bbd079b372b722ad1a596d58d9fefaa1f100c2a9307f4942d762ff9f3240b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling cc v1.2.16
[INFO] [stderr]    Compiling zerocopy v0.8.23
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling litemap v0.7.5
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.5
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]    Compiling indexmap v2.8.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling deranged v0.4.0
[INFO] [stderr]    Compiling time-macros v0.2.21
[INFO] [stderr]    Compiling tinyvec v1.9.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling cookie v0.17.0
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling pi_ext_heap v0.1.1
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pi_ext_heap-0.1.1/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]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pi_ext_heap-0.1.1/src/lib.rs:145:1
[INFO] [stdout]     |
[INFO] [stdout] 145 | #![feature(inplace_iteration)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pi_ext_heap-0.1.1/src/lib.rs:146:1
[INFO] [stdout]     |
[INFO] [stdout] 146 | #![feature(trusted_len)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pi_ext_heap-0.1.1/src/lib.rs:147:1
[INFO] [stdout]     |
[INFO] [stdout] 147 | #![feature(exact_size_is_empty)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pi_ext_heap-0.1.1/src/lib.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | #![feature(extend_one)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling brotli-decompressor v4.0.2
[INFO] [stderr] error: could not compile `pi_ext_heap` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "40bbd079b372b722ad1a596d58d9fefaa1f100c2a9307f4942d762ff9f3240b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40bbd079b372b722ad1a596d58d9fefaa1f100c2a9307f4942d762ff9f3240b1", kill_on_drop: false }`
[INFO] [stdout] 40bbd079b372b722ad1a596d58d9fefaa1f100c2a9307f4942d762ff9f3240b1