[INFO] updating cached repository https://github.com/razielgn/ostrov
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] cfd4de0de03c8365aa7698a569dba7a2c295d77f
[INFO] checking razielgn/ostrov against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frazielgn%2Fostrov" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/razielgn/ostrov on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/razielgn/ostrov
[INFO] removed 1 missing tests
[INFO] finished tweaking git repo https://github.com/razielgn/ostrov
[INFO] tweaked toml for git repo https://github.com/razielgn/ostrov written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/razielgn/ostrov already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 66a98f82173405dab88a6fd3a4b41bc848ec32cc7f8854d8d8f308124fb56e6b
[INFO] running `"docker" "start" "-a" "66a98f82173405dab88a6fd3a4b41bc848ec32cc7f8854d8d8f308124fb56e6b"`
[INFO] [stderr]     Checking bytecount v0.3.1
[INFO] [stderr]     Checking nom v4.0.0
[INFO] [stderr]     Checking nom_locate v0.3.0
[INFO] [stderr]     Checking ostrov v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 |         instructions.append(&mut try!(compile_single(ast_value)));
[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/ostrov/compiler.rs:74:30
[INFO] [stderr]    |
[INFO] [stderr] 74 |     instructions.append(&mut try!(compile_single(&args[0])));
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:76:20
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut then = try!(compile_single(&args[1]));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:81:25
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let mut else_ = try!(compile_single(&args[2]));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:117:35
[INFO] [stderr]     |
[INFO] [stderr] 117 |             let compiled_single = try!(compile_single(arg));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:155:28
[INFO] [stderr]     |
[INFO] [stderr] 155 |         let mut argument = try!(compile_single(&args[1]));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:175:42
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 instructions.append(&mut try!(compile_single(&args[1])));
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:183:24
[INFO] [stderr]     |
[INFO] [stderr] 183 |             let name = try!(unpack_atom(&list[0]));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:191:38
[INFO] [stderr]     |
[INFO] [stderr] 191 |             instructions.append(&mut try!(emit_lambda(&lambda)));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:196:24
[INFO] [stderr]     |
[INFO] [stderr] 196 |             let name = try!(unpack_atom(&list[0]));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:211:38
[INFO] [stderr]     |
[INFO] [stderr] 211 |             instructions.append(&mut try!(emit_lambda(&lambda)));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:226:34
[INFO] [stderr]     |
[INFO] [stderr] 226 |         instructions.append(&mut try!(compile_single(arg)));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:230:30
[INFO] [stderr]     |
[INFO] [stderr] 230 |     instructions.append(&mut try!(compile_single(head)));
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:243:25
[INFO] [stderr]     |
[INFO] [stderr] 243 |     let compiled_body = try!(compile(body));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:244:29
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let (args, args_type) = try!(function_arguments(&args_[0]));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:269:33
[INFO] [stderr]     |
[INFO] [stderr] 269 |                     params.push(try!(unpack_atom(&binding[0])));
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:271:46
[INFO] [stderr]     |
[INFO] [stderr] 271 |                     instructions.append(&mut try!(compile_single(&binding[1])));
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:280:37
[INFO] [stderr]     |
[INFO] [stderr] 280 |             inner_instr.append(&mut try!(compile_single(body)));
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:305:27
[INFO] [stderr]     |
[INFO] [stderr] 305 |                 let arg = try!(unpack_atom(atom));
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:315:27
[INFO] [stderr]     |
[INFO] [stderr] 315 |                 let arg = try!(unpack_atom(atom));
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |             let arg = try!(unpack_atom(extra));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:41:20
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:67:20
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:89:20
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/primitives.rs:220:20
[INFO] [stderr]     |
[INFO] [stderr] 220 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let exprs = try!(self.parse_str(input));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:34:28
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let bytecode = try!(compile_single(expr));
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:35:32
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let evalued_expr = try!(self.vm.execute(bytecode));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         try!(write!(f, "{}", item));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             try!(write!(f, " "));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     try!(write!(f, "("));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     try!(fmt_join_with_spaces(items, f));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     try!(write!(f, "{}", left));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |             try!(write!(f, " "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     try!(write!(f, "("));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 116 |     try!(fmt_join_with_spaces(items, f));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     try!(write!(f, "<"));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:134:13
[INFO] [stderr]     |
[INFO] [stderr] 134 |             try!(write!(f, "procedure {}", n));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             try!(write!(f, "lambda"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(write!(f, " "));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:144:16
[INFO] [stderr]     |
[INFO] [stderr] 144 |         Any => try!(write!(f, "{}", args[0])),
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:145:18
[INFO] [stderr]     |
[INFO] [stderr] 145 |         Fixed => try!(fmt_list(args, f)),
[INFO] [stderr]     |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:149:13
[INFO] [stderr]     |
[INFO] [stderr] 149 |             try!(fmt_dotted_list(head, tail, f));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:165:17
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 try!(write!(f, "("));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:166:17
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 try!(fmt_pair(left, right, f));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:74:25
[INFO] [stderr]    |
[INFO] [stderr] 74 |                         try!(self.load_reference(reference))
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:77:47
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     Replace(ref reference) => try!(self.replace(reference)),
[INFO] [stderr]    |                                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:79:30
[INFO] [stderr]    |
[INFO] [stderr] 79 |                     Apply => try!(self.apply()),
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:160:21
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let frame = try!(self.stack.pop_back().ok_or(RuntimeError::CannotPopLastFrame));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 try!(self.code.pop().ok_or(RuntimeError::CannotPopLastFrame));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |                     try!(primitives::apply(name, &self.rib, &mut self.memory));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 try!(self.pop_frame(false));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 |         instructions.append(&mut try!(compile_single(ast_value)));
[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/ostrov/compiler.rs:74:30
[INFO] [stderr]    |
[INFO] [stderr] 74 |     instructions.append(&mut try!(compile_single(&args[0])));
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:76:20
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut then = try!(compile_single(&args[1]));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/compiler.rs:81:25
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let mut else_ = try!(compile_single(&args[2]));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:117:35
[INFO] [stderr]     |
[INFO] [stderr] 117 |             let compiled_single = try!(compile_single(arg));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:155:28
[INFO] [stderr]     |
[INFO] [stderr] 155 |         let mut argument = try!(compile_single(&args[1]));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:175:42
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 instructions.append(&mut try!(compile_single(&args[1])));
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:183:24
[INFO] [stderr]     |
[INFO] [stderr] 183 |             let name = try!(unpack_atom(&list[0]));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:191:38
[INFO] [stderr]     |
[INFO] [stderr] 191 |             instructions.append(&mut try!(emit_lambda(&lambda)));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:196:24
[INFO] [stderr]     |
[INFO] [stderr] 196 |             let name = try!(unpack_atom(&list[0]));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:211:38
[INFO] [stderr]     |
[INFO] [stderr] 211 |             instructions.append(&mut try!(emit_lambda(&lambda)));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:226:34
[INFO] [stderr]     |
[INFO] [stderr] 226 |         instructions.append(&mut try!(compile_single(arg)));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:230:30
[INFO] [stderr]     |
[INFO] [stderr] 230 |     instructions.append(&mut try!(compile_single(head)));
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:243:25
[INFO] [stderr]     |
[INFO] [stderr] 243 |     let compiled_body = try!(compile(body));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:244:29
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let (args, args_type) = try!(function_arguments(&args_[0]));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:269:33
[INFO] [stderr]     |
[INFO] [stderr] 269 |                     params.push(try!(unpack_atom(&binding[0])));
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:271:46
[INFO] [stderr]     |
[INFO] [stderr] 271 |                     instructions.append(&mut try!(compile_single(&binding[1])));
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:280:37
[INFO] [stderr]     |
[INFO] [stderr] 280 |             inner_instr.append(&mut try!(compile_single(body)));
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:305:27
[INFO] [stderr]     |
[INFO] [stderr] 305 |                 let arg = try!(unpack_atom(atom));
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:315:27
[INFO] [stderr]     |
[INFO] [stderr] 315 |                 let arg = try!(unpack_atom(atom));
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/compiler.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |             let arg = try!(unpack_atom(extra));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:41:20
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:67:20
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/primitives.rs:89:20
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/primitives.rs:220:20
[INFO] [stderr]     |
[INFO] [stderr] 220 |     let integers = try!(list_of_integers(args));
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let exprs = try!(self.parse_str(input));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:34:28
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let bytecode = try!(compile_single(expr));
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/runtime.rs:35:32
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let evalued_expr = try!(self.vm.execute(bytecode));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         try!(write!(f, "{}", item));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             try!(write!(f, " "));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     try!(write!(f, "("));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     try!(fmt_join_with_spaces(items, f));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/values.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     try!(write!(f, "{}", left));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |             try!(write!(f, " "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     try!(write!(f, "("));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 116 |     try!(fmt_join_with_spaces(items, f));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     try!(write!(f, "<"));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:134:13
[INFO] [stderr]     |
[INFO] [stderr] 134 |             try!(write!(f, "procedure {}", n));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             try!(write!(f, "lambda"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(write!(f, " "));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:144:16
[INFO] [stderr]     |
[INFO] [stderr] 144 |         Any => try!(write!(f, "{}", args[0])),
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:145:18
[INFO] [stderr]     |
[INFO] [stderr] 145 |         Fixed => try!(fmt_list(args, f)),
[INFO] [stderr]     |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:149:13
[INFO] [stderr]     |
[INFO] [stderr] 149 |             try!(fmt_dotted_list(head, tail, f));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:165:17
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 try!(write!(f, "("));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/values.rs:166:17
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 try!(fmt_pair(left, right, f));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:74:25
[INFO] [stderr]    |
[INFO] [stderr] 74 |                         try!(self.load_reference(reference))
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:77:47
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     Replace(ref reference) => try!(self.replace(reference)),
[INFO] [stderr]    |                                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ostrov/vm.rs:79:30
[INFO] [stderr]    |
[INFO] [stderr] 79 |                     Apply => try!(self.apply()),
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:160:21
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let frame = try!(self.stack.pop_back().ok_or(RuntimeError::CannotPopLastFrame));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 try!(self.code.pop().ok_or(RuntimeError::CannotPopLastFrame));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |                     try!(primitives::apply(name, &self.rib, &mut self.memory));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ostrov/vm.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 try!(self.pop_frame(false));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] error: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]   --> benches/benchmarks.rs:36:3
[INFO] [stderr]    |
[INFO] [stderr] 36 | #[bench]
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[deny(soft_unstable)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] error: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]   --> benches/benchmarks.rs:45:3
[INFO] [stderr]    |
[INFO] [stderr] 45 | #[bench]
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] error: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]   --> benches/benchmarks.rs:54:3
[INFO] [stderr]    |
[INFO] [stderr] 54 | #[bench]
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]  --> benches/benchmarks.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate test;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]   = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]  --> benches/benchmarks.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use test::Bencher;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]   = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:37:30
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn nested_evaluation(b: &mut Bencher) {
[INFO] [stderr]    |                              ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:46:39
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn nested_evaluation_bytecode(b: &mut Bencher) {
[INFO] [stderr]    |                                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:55:33
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn procedure_evaluation(b: &mut Bencher) {
[INFO] [stderr]    |                                 ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |     b.iter(|| {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:49:7
[INFO] [stderr]    |
[INFO] [stderr] 49 |     b.iter(|| {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> benches/benchmarks.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |     b.iter(|| {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 11 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `ostrov`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "66a98f82173405dab88a6fd3a4b41bc848ec32cc7f8854d8d8f308124fb56e6b"`
[INFO] running `"docker" "rm" "-f" "66a98f82173405dab88a6fd3a4b41bc848ec32cc7f8854d8d8f308124fb56e6b"`
[INFO] [stdout] 66a98f82173405dab88a6fd3a4b41bc848ec32cc7f8854d8d8f308124fb56e6b