[INFO] cloning repository https://github.com/xudifsd/hello_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xudifsd/hello_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Fhello_rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Fhello_rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d1c4fcff6c7f1c77bde570e02c1c576e424011e9
[INFO] checking xudifsd/hello_rust against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Fhello_rust" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xudifsd/hello_rust on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/xudifsd/hello_rust
[INFO] finished tweaking git repo https://github.com/xudifsd/hello_rust
[INFO] tweaked toml for git repo https://github.com/xudifsd/hello_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/xudifsd/hello_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d39c92eb74ef6aa1cae38b266ba353821ff6d067381cb9012b84ae6e044c26ab
[INFO] running `"docker" "start" "-a" "d39c92eb74ef6aa1cae38b266ba353821ff6d067381cb9012b84ae6e044c26ab"`
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `tree`
[INFO] [stderr]   --> src/tree.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     use tree::Tree;
[INFO] [stderr]    |         ^^^^ maybe a missing crate `tree`?
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `hello_rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d39c92eb74ef6aa1cae38b266ba353821ff6d067381cb9012b84ae6e044c26ab"`
[INFO] running `"docker" "rm" "-f" "d39c92eb74ef6aa1cae38b266ba353821ff6d067381cb9012b84ae6e044c26ab"`
[INFO] [stdout] d39c92eb74ef6aa1cae38b266ba353821ff6d067381cb9012b84ae6e044c26ab