[INFO] fetching crate fir 0.1.0...
[INFO] testing fir-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate fir 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fir 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fir 0.1.0
[INFO] finished tweaking crates.io crate fir 0.1.0
[INFO] tweaked toml for crates.io crate fir 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3499098c69e0c9a4c13dac1e92da7aa4e4e1400cc87c04412586f4ba52adc711
[INFO] running `"docker" "start" "-a" "3499098c69e0c9a4c13dac1e92da7aa4e4e1400cc87c04412586f4ba52adc711"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling fir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `"docker" "inspect" "3499098c69e0c9a4c13dac1e92da7aa4e4e1400cc87c04412586f4ba52adc711"`
[INFO] running `"docker" "rm" "-f" "3499098c69e0c9a4c13dac1e92da7aa4e4e1400cc87c04412586f4ba52adc711"`
[INFO] [stdout] 3499098c69e0c9a4c13dac1e92da7aa4e4e1400cc87c04412586f4ba52adc711
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b7d5d37a9f63a70c499b2ca6cb5d20b9e6acb32c11a8c35ee88f909e90873eec
[INFO] running `"docker" "start" "-a" "b7d5d37a9f63a70c499b2ca6cb5d20b9e6acb32c11a8c35ee88f909e90873eec"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling fir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0583]: file not found for module `tree`
[INFO] [stderr]  --> examples/simple_tree.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod tree;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: to create the module `tree`, create file "examples/tree.rs"
[INFO] [stderr] 
[INFO] [stderr] error[E0583]: file not found for module `node`
[INFO] [stderr]  --> examples/simple_tree.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod node;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: to create the module `node`, create file "examples/node.rs"
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `tree::Tree`
[INFO] [stderr]  --> examples/simple_tree.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tree::{Tree};
[INFO] [stderr]   |            ^^^^ no `Tree` in `tree`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0583.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `fir`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b7d5d37a9f63a70c499b2ca6cb5d20b9e6acb32c11a8c35ee88f909e90873eec"`
[INFO] running `"docker" "rm" "-f" "b7d5d37a9f63a70c499b2ca6cb5d20b9e6acb32c11a8c35ee88f909e90873eec"`
[INFO] [stdout] b7d5d37a9f63a70c499b2ca6cb5d20b9e6acb32c11a8c35ee88f909e90873eec