[INFO] fetching crate spanr 0.1.0...
[INFO] testing spanr-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate spanr 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate spanr 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spanr 0.1.0
[INFO] finished tweaking crates.io crate spanr 0.1.0
[INFO] tweaked toml for crates.io crate spanr 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe59c54c18d381ea045216d907a772c4ca4ad2d2ef1ea178ce980a59f68cc727
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fe59c54c18d381ea045216d907a772c4ca4ad2d2ef1ea178ce980a59f68cc727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe59c54c18d381ea045216d907a772c4ca4ad2d2ef1ea178ce980a59f68cc727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe59c54c18d381ea045216d907a772c4ca4ad2d2ef1ea178ce980a59f68cc727", kill_on_drop: false }`
[INFO] [stdout] fe59c54c18d381ea045216d907a772c4ca4ad2d2ef1ea178ce980a59f68cc727
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75c72b33c1940ea66c2e8e34a4bd37a56e4037324aba4f5f6443524e2e72e8f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "75c72b33c1940ea66c2e8e34a4bd37a56e4037324aba4f5f6443524e2e72e8f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling utf8-width v0.1.4
[INFO] [stderr]    Compiling html-escape v0.2.6
[INFO] [stderr]    Compiling spanr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `source_file` found for struct `Span` in the current scope
[INFO] [stdout]   --> src/lib.rs:69:32
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let source_file = span.source_file();
[INFO] [stdout]    |                                ^^^^^^^^^^^ method not found in `Span`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spanr`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "75c72b33c1940ea66c2e8e34a4bd37a56e4037324aba4f5f6443524e2e72e8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75c72b33c1940ea66c2e8e34a4bd37a56e4037324aba4f5f6443524e2e72e8f5", kill_on_drop: false }`
[INFO] [stdout] 75c72b33c1940ea66c2e8e34a4bd37a56e4037324aba4f5f6443524e2e72e8f5