[INFO] updating cached repository nikomatsakis/rusty-wam
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nikomatsakis/rusty-wam
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nikomatsakis/rusty-wam" "work/ex/beta-1.38-1/sources/1.37.0/gh/nikomatsakis/rusty-wam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nikomatsakis/rusty-wam'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nikomatsakis/rusty-wam" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikomatsakis/rusty-wam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikomatsakis/rusty-wam'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec9b0daa9ee159dc136c905322df912c9a035678
[INFO] sha for GitHub repo nikomatsakis/rusty-wam: ec9b0daa9ee159dc136c905322df912c9a035678
[INFO] validating manifest of nikomatsakis/rusty-wam 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 nikomatsakis/rusty-wam 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 nikomatsakis/rusty-wam
[INFO] removed path dependency lalrpop-intern from nikomatsakis/rusty-wam
[INFO] finished frobbing nikomatsakis/rusty-wam
[INFO] frobbed toml for nikomatsakis/rusty-wam written to work/ex/beta-1.38-1/sources/1.37.0/gh/nikomatsakis/rusty-wam/Cargo.toml
[INFO] started frobbing nikomatsakis/rusty-wam
[INFO] removed path dependency lalrpop-intern from nikomatsakis/rusty-wam
[INFO] finished frobbing nikomatsakis/rusty-wam
[INFO] frobbed toml for nikomatsakis/rusty-wam written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikomatsakis/rusty-wam/Cargo.toml
[INFO] crate nikomatsakis/rusty-wam 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nikomatsakis/rusty-wam/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nikomatsakis/rusty-wam 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nikomatsakis/rusty-wam:/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] 47abd42634fbbb879652d8fb163792062f732de178d4f68129236fd9f3905cd8
[INFO] running `"docker" "start" "-a" "47abd42634fbbb879652d8fb163792062f732de178d4f68129236fd9f3905cd8"`
[INFO] [stderr] warning: dependency (lalrpop-intern) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling lalrpop-intern v0.15.1
[INFO] [stderr]    Compiling wam-tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/ast/mod.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | / macro_rules! term {
[INFO] [stderr] 43 | |     ($($args:tt)*) => {
[INFO] [stderr] 44 | |         {
[INFO] [stderr] 45 | |             let (term, ()) = terms_tt!($($args,)*,,);
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |     }
[INFO] [stderr] 49 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/ast/mod.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | / macro_rules! structure {
[INFO] [stderr] 52 | |     ($($args:tt)*) => {
[INFO] [stderr] 53 | |         match terms_tt!($($args,)*,,) {
[INFO] [stderr] 54 | |             ($crate::ast::Term::Structure(s), ()) => s,
[INFO] [stderr] ...  |
[INFO] [stderr] 57 | |     }
[INFO] [stderr] 58 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/ast/mod.rs:60:1
[INFO] [stderr]     |
[INFO] [stderr] 60  | / macro_rules! terms_tt {
[INFO] [stderr] 61  | |     () => {
[INFO] [stderr] 62  | |         ()
[INFO] [stderr] 63  | |     };
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |     };
[INFO] [stderr] 100 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/functor.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | / macro_rules! functor {
[INFO] [stderr] 26 | |     ($x:ident / $n:expr) => {
[INFO] [stderr] 27 | |         $crate::functor::Functor::new(
[INFO] [stderr] 28 | |             $crate::intern::intern(stringify!($x)),
[INFO] [stderr] 29 | |             $n)
[INFO] [stderr] 30 | |     }
[INFO] [stderr] 31 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `wam_tutorial`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `wam-tutorial`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "47abd42634fbbb879652d8fb163792062f732de178d4f68129236fd9f3905cd8"`
[INFO] running `"docker" "rm" "-f" "47abd42634fbbb879652d8fb163792062f732de178d4f68129236fd9f3905cd8"`
[INFO] [stdout] 47abd42634fbbb879652d8fb163792062f732de178d4f68129236fd9f3905cd8