[INFO] updating cached repository https://github.com/huonw/multibuilder
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3a651a72b276ee45ff66f588414f5fded4a04391
[INFO] checking huonw/multibuilder against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Fmultibuilder" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huonw/multibuilder on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/huonw/multibuilder
[INFO] finished tweaking git repo https://github.com/huonw/multibuilder
[INFO] tweaked toml for git repo https://github.com/huonw/multibuilder written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/huonw/multibuilder already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/glob`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] ac70456b5623c155d9cc2f1b7ca21e003be21628f6938a1a5b255c4959eadafa
[INFO] running `"docker" "start" "-a" "ac70456b5623c155d9cc2f1b7ca21e003be21628f6938a1a5b255c4959eadafa"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking glob v0.3.0 (https://github.com/rust-lang/glob#81897359)
[INFO] [stderr]     Checking multibuilder v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `unused_variable`
[INFO] [stderr]   --> src/git.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |     #[allow(unused_variable)] // error handling should be better
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: did you mean: `unused_variables`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_variable`
[INFO] [stderr]   --> src/git.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |     #[allow(unused_variable)] // error handling should be better
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: did you mean: `unused_variables`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `.`, `;`, `?`, `}`, or an operator, found keyword `let`
[INFO] [stderr]   --> src/task_worker.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 53 |                         println!("Building {}", hash.value)
[INFO] [stderr]    |                                                            - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stderr] ...
[INFO] [stderr] 56 |                         let hash_dir = build_dir.join(hash.value.as_slice());
[INFO] [stderr]    |                         ^^^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stderr]   --> src/task_worker.rs:41:28
[INFO] [stderr]    |
[INFO] [stderr] 41 |         task::spawn(proc() {
[INFO] [stderr]    |                           -^ expected one of `)`, `,`, `.`, `?`, or an operator
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: missing `,`
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `serialize`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `.`, `;`, `?`, `}`, or an operator, found keyword `let`
[INFO] [stderr]   --> src/task_worker.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 53 |                         println!("Building {}", hash.value)
[INFO] [stderr]    |                                                            - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stderr] ...
[INFO] [stderr] 56 |                         let hash_dir = build_dir.join(hash.value.as_slice());
[INFO] [stderr]    |                         ^^^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stderr]   --> src/task_worker.rs:41:28
[INFO] [stderr]    |
[INFO] [stderr] 41 |         task::spawn(proc() {
[INFO] [stderr]    |                           -^ expected one of `)`, `,`, `.`, `?`, or an operator
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: missing `,`
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `serialize`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `multibuilder`.
[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: could not compile `multibuilder`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ac70456b5623c155d9cc2f1b7ca21e003be21628f6938a1a5b255c4959eadafa"`
[INFO] running `"docker" "rm" "-f" "ac70456b5623c155d9cc2f1b7ca21e003be21628f6938a1a5b255c4959eadafa"`
[INFO] [stdout] ac70456b5623c155d9cc2f1b7ca21e003be21628f6938a1a5b255c4959eadafa
