[INFO] cloning repository https://github.com/nikomatsakis/rusty-wam
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nikomatsakis/rusty-wam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frusty-wam"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frusty-wam'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec9b0daa9ee159dc136c905322df912c9a035678
[INFO] checking nikomatsakis/rusty-wam against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frusty-wam" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nikomatsakis/rusty-wam on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nikomatsakis/rusty-wam
[INFO] removed path dependency lalrpop-intern from git repo https://github.com/nikomatsakis/rusty-wam
[INFO] finished tweaking git repo https://github.com/nikomatsakis/rusty-wam
[INFO] tweaked toml for git repo https://github.com/nikomatsakis/rusty-wam written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nikomatsakis/rusty-wam already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/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[INFO] the lockfile is outdated, regenerating it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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-intern v0.15.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] b81f1a8ae07b718d54743bf2eccc8199fe1770c9c46e7b27c3b282ed2a53fb5b
[INFO] running `"docker" "start" "-a" "b81f1a8ae07b718d54743bf2eccc8199fe1770c9c46e7b27c3b282ed2a53fb5b"`
[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]     Checking lalrpop-intern v0.15.1
[INFO] [stderr]     Checking wam-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ast/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             try!(write!(fmt, "{}", self.functor.text()));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ast/mod.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 try!(write!(fmt, "{}{:?}", sep, term));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         try!(self.machine.get_structure(structure.functor, into));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:138:25
[INFO] [stderr]     |
[INFO] [stderr] 138 |                         try!(self.machine.unify_value(reg));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:150:21
[INFO] [stderr]     |
[INFO] [stderr] 150 |                     try!(self.structure(substructure, reg));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:274:17
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 try!(write!(fmt, "{}", functor.text()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:276:21
[INFO] [stderr]     |
[INFO] [stderr] 276 |                     try!(write!(fmt, "("));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:278:21
[INFO] [stderr]     |
[INFO] [stderr] 278 |                     try!(self.write(fmt, slot));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:281:25
[INFO] [stderr]     |
[INFO] [stderr] 281 |                         try!(write!(fmt, ","));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:282:25
[INFO] [stderr]     |
[INFO] [stderr] 282 |                         try!(self.write(fmt, slot));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:284:21
[INFO] [stderr]     |
[INFO] [stderr] 284 |                     try!(write!(fmt, ")"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:311:9
[INFO] [stderr]     |
[INFO] [stderr] 311 |         try!(writeln!(fmt, "Memory {{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |             try!(writeln!(fmt, "  H{:?}: {:?}", i, cell));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:315:9
[INFO] [stderr]     |
[INFO] [stderr] 315 |         try!(writeln!(fmt, ""));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:317:13
[INFO] [stderr]     |
[INFO] [stderr] 317 |             try!(writeln!(fmt, "  R{:?}: {:?}", i, cell));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mod.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 try!(self.mem.unify(reg.to_address(), next.to_address()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[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]   --> src/main.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / extern crate lalrpop_intern as intern;
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | | #[macro_use]
[INFO] [stderr] 4  | | mod ast;
[INFO] [stderr] ...  |
[INFO] [stderr] 9  | | mod interpret;
[INFO] [stderr] 10 | | mod machine;
[INFO] [stderr]    | |____________^ consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ast/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             try!(write!(fmt, "{}", self.functor.text()));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ast/mod.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 try!(write!(fmt, "{}{:?}", sep, term));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         try!(self.machine.get_structure(structure.functor, into));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:138:25
[INFO] [stderr]     |
[INFO] [stderr] 138 |                         try!(self.machine.unify_value(reg));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/interpret/mod.rs:150:21
[INFO] [stderr]     |
[INFO] [stderr] 150 |                     try!(self.structure(substructure, reg));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:274:17
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 try!(write!(fmt, "{}", functor.text()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:276:21
[INFO] [stderr]     |
[INFO] [stderr] 276 |                     try!(write!(fmt, "("));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:278:21
[INFO] [stderr]     |
[INFO] [stderr] 278 |                     try!(self.write(fmt, slot));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:281:25
[INFO] [stderr]     |
[INFO] [stderr] 281 |                         try!(write!(fmt, ","));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:282:25
[INFO] [stderr]     |
[INFO] [stderr] 282 |                         try!(self.write(fmt, slot));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:284:21
[INFO] [stderr]     |
[INFO] [stderr] 284 |                     try!(write!(fmt, ")"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:311:9
[INFO] [stderr]     |
[INFO] [stderr] 311 |         try!(writeln!(fmt, "Memory {{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |             try!(writeln!(fmt, "  H{:?}: {:?}", i, cell));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:315:9
[INFO] [stderr]     |
[INFO] [stderr] 315 |         try!(writeln!(fmt, ""));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mem.rs:317:13
[INFO] [stderr]     |
[INFO] [stderr] 317 |             try!(writeln!(fmt, "  R{:?}: {:?}", i, cell));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     try!(machine.get_structure(functor!(p/3), Register(0)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     try!(machine.get_structure(functor!(f/1), Register(1)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     try!(machine.get_structure(functor!(h/2), Register(2)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     try!(machine.unify_value(Register(3)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     try!(machine.get_structure(functor!(f/1), Register(5)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/machine/test.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     try!(machine.get_structure(functor!(a/0), Register(6)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/machine/mod.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 try!(self.mem.unify(reg.to_address(), next.to_address()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 20 warnings emitted
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: 22 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b81f1a8ae07b718d54743bf2eccc8199fe1770c9c46e7b27c3b282ed2a53fb5b"`
[INFO] running `"docker" "rm" "-f" "b81f1a8ae07b718d54743bf2eccc8199fe1770c9c46e7b27c3b282ed2a53fb5b"`
[INFO] [stdout] b81f1a8ae07b718d54743bf2eccc8199fe1770c9c46e7b27c3b282ed2a53fb5b