[INFO] fetching crate minicdn 0.2.4...
[INFO] testing minicdn-0.2.4 against 1.90.0 for beta-1.91-3
[INFO] extracting crate minicdn 0.2.4 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate minicdn 0.2.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate minicdn 0.2.4
[INFO] tweaked toml for crates.io crate minicdn 0.2.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate minicdn 0.2.4 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 minicdn 0.2.4 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minicdn_core v0.2.4
[INFO] [stderr]   Downloaded minicdn_macros v0.2.4
[INFO] [stderr]   Downloaded bytestring v1.3.1
[INFO] [stderr]   Downloaded sha256 v1.5.0
[INFO] [stderr]   Downloaded litrs v0.2.3
[INFO] [stderr]   Downloaded bytemuck v1.16.1
[INFO] [stderr]   Downloaded serde_derive v1.0.204
[INFO] [stderr]   Downloaded cc v1.1.0
[INFO] [stderr]   Downloaded serde v1.0.204
[INFO] [stderr]   Downloaded syn v2.0.70
[INFO] [stderr]   Downloaded brotli v3.5.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36020568c4f423d70c1b2604471245910ae1f6ebe5938fda2860cef9134ea6e1
[INFO] running `Command { std: "docker" "start" "-a" "36020568c4f423d70c1b2604471245910ae1f6ebe5938fda2860cef9134ea6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36020568c4f423d70c1b2604471245910ae1f6ebe5938fda2860cef9134ea6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36020568c4f423d70c1b2604471245910ae1f6ebe5938fda2860cef9134ea6e1", kill_on_drop: false }`
[INFO] [stdout] 36020568c4f423d70c1b2604471245910ae1f6ebe5938fda2860cef9134ea6e1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0125f3a0173c3e84fec0d261dab1e60caa07d8c7e2471611820f2c74e10d76f3
[INFO] running `Command { std: "docker" "start" "-a" "0125f3a0173c3e84fec0d261dab1e60caa07d8c7e2471611820f2c74e10d76f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.6.0
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling minicdn_core v0.2.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling minicdn_macros v0.2.4
[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/minicdn_macros-0.2.4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `source_file` found for struct `proc_macro::Span` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/minicdn_macros-0.2.4/src/lib.rs:167:59
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut root_path = proc_macro::Span::call_site().source_file().path();
[INFO] [stdout]     |                                                           ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `source` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 167 -         let mut root_path = proc_macro::Span::call_site().source_file().path();
[INFO] [stdout] 167 +         let mut root_path = proc_macro::Span::call_site().source().path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minicdn_macros` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0125f3a0173c3e84fec0d261dab1e60caa07d8c7e2471611820f2c74e10d76f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0125f3a0173c3e84fec0d261dab1e60caa07d8c7e2471611820f2c74e10d76f3", kill_on_drop: false }`
[INFO] [stdout] 0125f3a0173c3e84fec0d261dab1e60caa07d8c7e2471611820f2c74e10d76f3