[INFO] updating cached repository mmichie/lightfoot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mmichie/lightfoot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mmichie/lightfoot" "work/ex/beta-1.38-1/sources/1.37.0/gh/mmichie/lightfoot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mmichie/lightfoot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mmichie/lightfoot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmichie/lightfoot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmichie/lightfoot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 31da0ebfea86a59c9b117137826778d74ff4a342
[INFO] sha for GitHub repo mmichie/lightfoot: 31da0ebfea86a59c9b117137826778d74ff4a342
[INFO] validating manifest of mmichie/lightfoot on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mmichie/lightfoot on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mmichie/lightfoot
[INFO] finished frobbing mmichie/lightfoot
[INFO] frobbed toml for mmichie/lightfoot written to work/ex/beta-1.38-1/sources/1.37.0/gh/mmichie/lightfoot/Cargo.toml
[INFO] started frobbing mmichie/lightfoot
[INFO] finished frobbing mmichie/lightfoot
[INFO] frobbed toml for mmichie/lightfoot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmichie/lightfoot/Cargo.toml
[INFO] crate mmichie/lightfoot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mmichie/lightfoot against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmichie/lightfoot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f2e193662b672cb74e28a3f67be46f30a238251d1dfd2176118281ee43c3dc39
[INFO] running `"docker" "start" "-a" "f2e193662b672cb74e28a3f67be46f30a238251d1dfd2176118281ee43c3dc39"`
[INFO] [stderr]    Compiling lightfoot v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::io::Timer`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Timer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^ no `Timer` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::rand;
[INFO] [stderr]   |     ^^^^^^^^^ no `rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/main.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | static N_THREADS: int = 1000;
[INFO] [stderr]   |                   ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(macro_rules, phase, slicing_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `spawn` found for type `std::thread::Thread` in the current scope
[INFO] [stderr]   --> src/main.rs:11:45
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let _ = (0..N_THREADS).map( |i| Thread::spawn(move || {
[INFO] [stderr]    |                                             ^^^^^ function or associated item not found in `std::thread::Thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `milliseconds` found for type `std::time::Duration` in the current scope
[INFO] [stderr]   --> src/main.rs:15:31
[INFO] [stderr]    |
[INFO] [stderr] 15 |         timer.sleep(Duration::milliseconds(t as i64));
[INFO] [stderr]    |                               ^^^^^^^^^^^^ function or associated item not found in `std::time::Duration`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `lightfoot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f2e193662b672cb74e28a3f67be46f30a238251d1dfd2176118281ee43c3dc39"`
[INFO] running `"docker" "rm" "-f" "f2e193662b672cb74e28a3f67be46f30a238251d1dfd2176118281ee43c3dc39"`
[INFO] [stdout] f2e193662b672cb74e28a3f67be46f30a238251d1dfd2176118281ee43c3dc39