[INFO] fetching crate rustlex_codegen 0.4.0...
[INFO] checking rustlex_codegen-0.4.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate rustlex_codegen 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate rustlex_codegen 0.4.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustlex_codegen 0.4.0
[INFO] finished tweaking crates.io crate rustlex_codegen 0.4.0
[INFO] tweaked toml for crates.io crate rustlex_codegen 0.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding bit-set v0.4.0 (available: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.4.4 (available: v0.8.0)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.22)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-vec v0.8.0
[INFO] [stderr]   Downloaded rustlex_fsa v0.4.0
[INFO] [stderr]   Downloaded bit-set v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 709edbdfdf58c67e18c81158565c1836cb592534b9aa3e5d48e28dfd6bcd3135
[INFO] running `Command { std: "docker" "start" "-a" "709edbdfdf58c67e18c81158565c1836cb592534b9aa3e5d48e28dfd6bcd3135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "709edbdfdf58c67e18c81158565c1836cb592534b9aa3e5d48e28dfd6bcd3135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "709edbdfdf58c67e18c81158565c1836cb592534b9aa3e5d48e28dfd6bcd3135", kill_on_drop: false }`
[INFO] [stdout] 709edbdfdf58c67e18c81158565c1836cb592534b9aa3e5d48e28dfd6bcd3135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 740e9e612446e53e6f777460215e33bbf58ff49b53fdd6cafc152e1561c9363f
[INFO] running `Command { std: "docker" "start" "-a" "740e9e612446e53e6f777460215e33bbf58ff49b53fdd6cafc152e1561c9363f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking rustlex_fsa v0.4.0
[INFO] [stderr]     Checking rustlex_codegen v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar,rustc_private,quote)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar,rustc_private,quote)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> lib.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar,rustc_private,quote)]
[INFO] [stdout]   |                                           ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> lib.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar,rustc_private,quote)]
[INFO] [stdout]   |                                           ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_errors`
[INFO] [stdout]  --> lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate rustc_errors;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_errors`
[INFO] [stdout]  --> lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate rustc_errors;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]   --> codegen.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         ty: quote_ty!(&*cx, ::rustlex::rt::RustLexLexer<R>),
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]   --> codegen.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         ty: quote_ty!(&*cx, usize),
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:160:22
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let match_expr = quote_expr!(&*cx, last_matching_action);
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]    --> codegen.rs:166:23
[INFO] [stdout]     |
[INFO] [stdout] 166 |     let action_type = quote_ty!(&*cx,  Fn(&mut $ident<R>) -> Option<$tokens>);
[INFO] [stdout]     |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]   --> codegen.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         ty: quote_ty!(&*cx, ::rustlex::rt::RustLexLexer<R>),
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:169:24
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let pat_expr = quote_expr!(&*cx, $i);
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:173:13
[INFO] [stdout]     |
[INFO] [stdout] 173 |             quote_expr!(&*cx, (Box::new($new_act)) as Box<$action_type>));
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]   --> codegen.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         ty: quote_ty!(&*cx, usize),
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:178:19
[INFO] [stdout]     |
[INFO] [stdout] 178 |     let def_act = quote_expr!(&*cx, Box::new(|_:&mut $ident<R>| -> Option<$tokens> {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:215:5
[INFO] [stdout]     |
[INFO] [stdout] 215 |     quote_item!(cx,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:160:22
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let match_expr = quote_expr!(&*cx, last_matching_action);
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 |     quote_item!(cx,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_ty` in this scope
[INFO] [stdout]    --> codegen.rs:166:23
[INFO] [stdout]     |
[INFO] [stdout] 166 |     let action_type = quote_ty!(&*cx,  Fn(&mut $ident<R>) -> Option<$tokens>);
[INFO] [stdout]     |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         quote_expr!(&*cx, ::rustlex::rt::RustLexLexer::new(reader))));
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         quote_expr!(&*cx, $initial)));
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:169:24
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let pat_expr = quote_expr!(&*cx, $i);
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |         quote_item!(cx,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:173:13
[INFO] [stdout]     |
[INFO] [stdout] 173 |             quote_expr!(&*cx, (Box::new($new_act)) as Box<$action_type>));
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:288:16
[INFO] [stdout]     |
[INFO] [stdout] 288 |     items.push(quote_item!(cx,
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:178:19
[INFO] [stdout]     |
[INFO] [stdout] 178 |     let def_act = quote_expr!(&*cx, Box::new(|_:&mut $ident<R>| -> Option<$tokens> {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:327:16
[INFO] [stdout]     |
[INFO] [stdout] 327 |     items.push(quote_item!(cx,
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:215:5
[INFO] [stdout]     |
[INFO] [stdout] 215 |     quote_item!(cx,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 |     quote_item!(cx,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         quote_expr!(&*cx, ::rustlex::rt::RustLexLexer::new(reader))));
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_expr` in this scope
[INFO] [stdout]    --> codegen.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         quote_expr!(&*cx, $initial)));
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |         quote_item!(cx,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:288:16
[INFO] [stdout]     |
[INFO] [stdout] 288 |     items.push(quote_item!(cx,
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |             try!(parser.expect(&token::Semi));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let token = try!(parser.parse_ident());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `quote_item` in this scope
[INFO] [stdout]    --> codegen.rs:327:16
[INFO] [stdout]     |
[INFO] [stdout] 327 |     items.push(quote_item!(cx,
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 try!(parser.expect(&token::Colon));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 try!(parser.expect(&token::Eq));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 try!(parser.expect(&token::Semi));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:119:28
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 let name = try!(parser.parse_ident());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:121:26
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 let ty = try!(parser.parse_ty());
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:123:28
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:212:37
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     regex::NotClass(try!(get_char_class(parser)))
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:216:34
[INFO] [stdout]     |
[INFO] [stdout] 216 |                     regex::Class(try!(get_char_class(parser)))
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:249:15
[INFO] [stdout]     |
[INFO] [stdout] 249 |     let reg = try!(get_const(parser, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:267:15
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let opl = try!(get_closure(parser, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:273:19
[INFO] [stdout]     |
[INFO] [stdout] 273 |         let opr = try!(get_concat(parser, end, env));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:281:16
[INFO] [stdout]     |
[INFO] [stdout] 281 |     let expr = try!(get_concat(parser, end, env));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let name = try!(parser.parse_ident());
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:298:16
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let left = try!(get_binding(parser, end, env));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         try!(parser.expect(&token::BinOp(token::Or)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:303:21
[INFO] [stdout]     |
[INFO] [stdout] 303 |         let right = try!(get_regex(parser, end, env));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:314:5
[INFO] [stdout]     |
[INFO] [stdout] 314 |     try!(parser.expect(&token::Eq));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:313:16
[INFO] [stdout]     |
[INFO] [stdout] 313 |     let name = try!(parser.parse_ident());
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:315:15
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let reg = try!(get_regex(parser, &token::Semi, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:330:25
[INFO] [stdout]     |
[INFO] [stdout] 330 |         let (id, pat) = try!(get_pattern(parser, &env));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:345:23
[INFO] [stdout]     |
[INFO] [stdout] 345 |         let pattern = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:346:22
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let action = try!(parser.parse_expr());
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:394:33
[INFO] [stdout]     |
[INFO] [stdout] 394 |                     let rules = try!(get_condition(parser, env));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:412:31
[INFO] [stdout]     |
[INFO] [stdout] 412 |                     let reg = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:413:32
[INFO] [stdout]     |
[INFO] [stdout] 413 |                     let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:422:27
[INFO] [stdout]     |
[INFO] [stdout] 422 |                 let reg = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:423:28
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:438:18
[INFO] [stdout]     |
[INFO] [stdout] 438 |     let tokens = try!(get_tokens(parser));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:439:17
[INFO] [stdout]     |
[INFO] [stdout] 439 |     let props = try!(get_properties(parser));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:440:23
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let (env, defs) = try!(get_definitions(parser));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:441:22
[INFO] [stdout]     |
[INFO] [stdout] 441 |     let conditions = try!(get_conditions(parser, &env));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |             try!(parser.expect(&token::Semi));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let token = try!(parser.parse_ident());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 try!(parser.expect(&token::Colon));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 try!(parser.expect(&token::Eq));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 try!(parser.expect(&token::Semi));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:119:28
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 let name = try!(parser.parse_ident());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:121:26
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 let ty = try!(parser.parse_ty());
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:123:28
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:212:37
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     regex::NotClass(try!(get_char_class(parser)))
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:216:34
[INFO] [stdout]     |
[INFO] [stdout] 216 |                     regex::Class(try!(get_char_class(parser)))
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:249:15
[INFO] [stdout]     |
[INFO] [stdout] 249 |     let reg = try!(get_const(parser, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:267:15
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let opl = try!(get_closure(parser, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:273:19
[INFO] [stdout]     |
[INFO] [stdout] 273 |         let opr = try!(get_concat(parser, end, env));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:281:16
[INFO] [stdout]     |
[INFO] [stdout] 281 |     let expr = try!(get_concat(parser, end, env));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let name = try!(parser.parse_ident());
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:298:16
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let left = try!(get_binding(parser, end, env));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         try!(parser.expect(&token::BinOp(token::Or)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:303:21
[INFO] [stdout]     |
[INFO] [stdout] 303 |         let right = try!(get_regex(parser, end, env));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:314:5
[INFO] [stdout]     |
[INFO] [stdout] 314 |     try!(parser.expect(&token::Eq));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:313:16
[INFO] [stdout]     |
[INFO] [stdout] 313 |     let name = try!(parser.parse_ident());
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:315:15
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let reg = try!(get_regex(parser, &token::Semi, env));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:330:25
[INFO] [stdout]     |
[INFO] [stdout] 330 |         let (id, pat) = try!(get_pattern(parser, &env));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |         -> Box<MacResult+'a> {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |         -> Box<dyn MacResult+'a> {
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:345:23
[INFO] [stdout]     |
[INFO] [stdout] 345 |         let pattern = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:346:22
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let action = try!(parser.parse_expr());
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:394:33
[INFO] [stdout]     |
[INFO] [stdout] 394 |                     let rules = try!(get_condition(parser, env));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:412:31
[INFO] [stdout]     |
[INFO] [stdout] 412 |                     let reg = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:413:32
[INFO] [stdout]     |
[INFO] [stdout] 413 |                     let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:422:27
[INFO] [stdout]     |
[INFO] [stdout] 422 |                 let reg = try!(get_regex(parser, &token::FatArrow, env));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:423:28
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 let expr = try!(parser.parse_expr());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:438:18
[INFO] [stdout]     |
[INFO] [stdout] 438 |     let tokens = try!(get_tokens(parser));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:439:17
[INFO] [stdout]     |
[INFO] [stdout] 439 |     let props = try!(get_properties(parser));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:440:23
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let (env, defs) = try!(get_definitions(parser));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> parser.rs:441:22
[INFO] [stdout]     |
[INFO] [stdout] 441 |     let conditions = try!(get_conditions(parser, &env));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lexer.rs:146:72
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn gen_code<'cx>(&self, cx: &'cx mut ExtCtxt, sp: Span) -> Box<MacResult + 'cx> {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn gen_code<'cx>(&self, cx: &'cx mut ExtCtxt, sp: Span) -> Box<dyn MacResult + 'cx> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |         -> Box<MacResult+'a> {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |         -> Box<dyn MacResult+'a> {
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lexer.rs:146:72
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn gen_code<'cx>(&self, cx: &'cx mut ExtCtxt, sp: Span) -> Box<MacResult + 'cx> {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn gen_code<'cx>(&self, cx: &'cx mut ExtCtxt, sp: Span) -> Box<dyn MacResult + 'cx> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors; 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors; 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustlex_codegen` (lib) due to 20 previous errors; 35 warnings emitted
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustlex_codegen` (lib test) due to 20 previous errors; 35 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "740e9e612446e53e6f777460215e33bbf58ff49b53fdd6cafc152e1561c9363f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "740e9e612446e53e6f777460215e33bbf58ff49b53fdd6cafc152e1561c9363f", kill_on_drop: false }`
[INFO] [stdout] 740e9e612446e53e6f777460215e33bbf58ff49b53fdd6cafc152e1561c9363f