[INFO] fetching crate drought_macros 0.0.2...
[INFO] testing drought_macros-0.0.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate drought_macros 0.0.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate drought_macros 0.0.2
[INFO] finished tweaking crates.io crate drought_macros 0.0.2
[INFO] tweaked toml for crates.io crate drought_macros 0.0.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate drought_macros 0.0.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 42cc8992a3f5bc38dca4a885eaee3ec8f16b1df56931a63754093788b16d0e23
[INFO] running `Command { std: "docker" "start" "-a" "42cc8992a3f5bc38dca4a885eaee3ec8f16b1df56931a63754093788b16d0e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42cc8992a3f5bc38dca4a885eaee3ec8f16b1df56931a63754093788b16d0e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42cc8992a3f5bc38dca4a885eaee3ec8f16b1df56931a63754093788b16d0e23", kill_on_drop: false }`
[INFO] [stdout] 42cc8992a3f5bc38dca4a885eaee3ec8f16b1df56931a63754093788b16d0e23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 24b44704b25232c380c0b743b2a91a8fbb094117e7a370caf7cbecc8493aaa8d
[INFO] running `Command { std: "docker" "start" "-a" "24b44704b25232c380c0b743b2a91a8fbb094117e7a370caf7cbecc8493aaa8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling drought_macros v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `proc_macro::SourceFile`
[INFO] [stdout]  --> src/state.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use proc_macro::SourceFile;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^ no `SourceFile` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[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(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]    --> src/droughter.rs:292:67
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let (verbs, blocks, handles) = get_exts(Span::call_site().source_file());
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `source` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 292 -         let (verbs, blocks, handles) = get_exts(Span::call_site().source_file());
[INFO] [stdout] 292 +         let (verbs, blocks, handles) = get_exts(Span::call_site().source());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `drought_macros` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "24b44704b25232c380c0b743b2a91a8fbb094117e7a370caf7cbecc8493aaa8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24b44704b25232c380c0b743b2a91a8fbb094117e7a370caf7cbecc8493aaa8d", kill_on_drop: false }`
[INFO] [stdout] 24b44704b25232c380c0b743b2a91a8fbb094117e7a370caf7cbecc8493aaa8d