[INFO] cloning repository https://github.com/jtdowney/som-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtdowney/som-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2efe4a39b364bbe3d0ffbdb163ae3fb1eafad4b3
[INFO] checking jtdowney/som-rust against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/commit-msg.sample' to '/workspace/builds/worker-1-tc2/source/.git/hooks/commit-msg.sample': No space left on device
[INFO] checking jtdowney/som-rust against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] /workspace/builds/worker-1-tc2/source/.git/hooks/: No space left on device
[INFO] checking jtdowney/som-rust against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] /workspace/builds/worker-1-tc2/source/.git/info/: No space left on device
[INFO] checking jtdowney/som-rust against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-rebase.sample' to '/workspace/builds/worker-1-tc2/source/.git/hooks/pre-rebase.sample': No space left on device
[INFO] checking jtdowney/som-rust against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdowney%2Fsom-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jtdowney/som-rust on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jtdowney/som-rust
[INFO] finished tweaking git repo https://github.com/jtdowney/som-rust
[INFO] tweaked toml for git repo https://github.com/jtdowney/som-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jtdowney/som-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de53b9490d5a92a09a73132cde49fbbce452f0852ff36b18fe294de800a653b4
[INFO] running `Command { std: "docker" "start" "-a" "de53b9490d5a92a09a73132cde49fbbce452f0852ff36b18fe294de800a653b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de53b9490d5a92a09a73132cde49fbbce452f0852ff36b18fe294de800a653b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de53b9490d5a92a09a73132cde49fbbce452f0852ff36b18fe294de800a653b4", kill_on_drop: false }`
[INFO] [stdout] de53b9490d5a92a09a73132cde49fbbce452f0852ff36b18fe294de800a653b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45721b62cfb9f20fce288a56c6903d091415bcc8c8b981a150223d4b8943cfdd
[INFO] running `Command { std: "docker" "start" "-a" "45721b62cfb9f20fce288a56c6903d091415bcc8c8b981a150223d4b8943cfdd", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking som v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 98 |             'a'...'z' | 'A'...'Z' => self.read_identifier(),
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[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(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:98:28
[INFO] [stdout]    |
[INFO] [stdout] 98 |             'a'...'z' | 'A'...'Z' => self.read_identifier(),
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |             '0'...'9' => self.read_number(),
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:37
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:59
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                                           ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:81
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                                                                 ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:243:29
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 Some(c @ '0'...'9') => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:261:37
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         Some(c @ '0'...'9') => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/lexer.rs:297:22
[INFO] [stdout]     |
[INFO] [stdout] 297 |             for _ in (0..count) {
[INFO] [stdout]     |                      ^        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 297 -             for _ in (0..count) {
[INFO] [stdout] 297 +             for _ in 0..count {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         try!(self.expect(Symbol::Equal));
[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]   --> src/compiler/parser.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let name = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let superclass = try!(self.parse_superclass_name());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:67:34
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let instance_variables = try!(self.parse_locals());
[INFO] [stdout]    |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:70:40
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let (name, method) = match try!(self.peek(1)) {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:71:49
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 Token(Symbol::Identifier, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:72:46
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 Token(Symbol::Keyword, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 Token(Symbol::OperatorSequence, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:74:71
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Token(ref symbol, _) if is_binary_operator(symbol) => try!(self.parse_method()),
[INFO] [stdout]    |                                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |             class_variables = try!(self.parse_locals());
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:86:44
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 let (name, method) = match try!(self.peek(1)) {
[INFO] [stdout]    |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:87:53
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     Token(Symbol::Identifier, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:88:50
[INFO] [stdout]    |
[INFO] [stdout] 88 |                     Token(Symbol::Keyword, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:89:59
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     Token(Symbol::OperatorSequence, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:90:75
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     Token(ref symbol, _) if is_binary_operator(symbol) => try!(self.parse_method()),
[INFO] [stdout]    |                                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |         try!(self.expect(Symbol::Equal));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:120:34
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let (name, parameters) = try!(self.parse_pattern());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 locals: try!(self.parse_locals()),
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:135:23
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 body: try!(self.parse_block_body()),
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:153:20
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let name = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:158:24
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut name = try!(self.expect(Symbol::Keyword)).unwrap();
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |         parameters.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:165:37
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     parameters.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:184:25
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let parameter = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             try!(self.expect(Symbol::Or));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |                 try!(self.expect(Symbol::Colon));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:210:33
[INFO] [stdout]     |
[INFO] [stdout] 210 |                 let parameter = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:214:21
[INFO] [stdout]     |
[INFO] [stdout] 214 |                     try!(self.expect(Symbol::Or));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:231:63
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 Ok(Token(Symbol::Exit, _)) => statements.push(try!(self.parse_result())),
[INFO] [stdout]     |                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:232:42
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 Ok(_) => statements.push(try!(self.parse_expression())),
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         try!(self.expect(Symbol::Exit));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:249:34
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let statement = Box::new(try!(self.parse_expression()));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 try!(self.expect(Symbol::Assign));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:258:34
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 assignments.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:271:28
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 variables: try!(self.parse_assignments()),
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:272:33
[INFO] [stdout]     |
[INFO] [stdout] 272 |                 value: Box::new(try!(self.parse_expression())),
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:275:34
[INFO] [stdout]     |
[INFO] [stdout] 275 |             let mut expression = try!(self.parse_expression_primary());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:279:57
[INFO] [stdout]     |
[INFO] [stdout] 279 |                     Ok(Token(Symbol::Identifier, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:280:54
[INFO] [stdout]     |
[INFO] [stdout] 280 |                     Ok(Token(Symbol::Keyword, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:281:63
[INFO] [stdout]     |
[INFO] [stdout] 281 |                     Ok(Token(Symbol::OperatorSequence, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:282:79
[INFO] [stdout]     |
[INFO] [stdout] 282 |                     Ok(Token(ref symbol, _)) if is_binary_operator(symbol) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:308:32
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let Token(symbol, _) = try!(self.peek(1));
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:313:38
[INFO] [stdout]     |
[INFO] [stdout] 313 |                         expression = try!(self.parse_expression_unary_message(expression));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:329:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         try!(self.expect(Symbol::NewBlock));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         try!(self.expect(Symbol::EndBlock));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |             parameters: try!(self.parse_block_parameters()),
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:332:21
[INFO] [stdout]     |
[INFO] [stdout] 332 |             locals: try!(self.parse_locals()),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:333:19
[INFO] [stdout]     |
[INFO] [stdout] 333 |             body: try!(self.parse_block_body()),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 343 |         try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:342:21
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let value = try!(self.parse_expression());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:349:24
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let variable = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let value = try!(self.expect(Symbol::String)).unwrap();
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |         try!(self.expect(Symbol::Pound));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |         try!(self.expect(Symbol::Minus));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:412:23
[INFO] [stdout]     |
[INFO] [stdout] 412 |         let message = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:423:37
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     parameters.push(try!(self.parse_expression_formula()));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:438:25
[INFO] [stdout]     |
[INFO] [stdout] 438 |         let mut value = try!(self.parse_expression_binary_operand());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:443:29
[INFO] [stdout]     |
[INFO] [stdout] 443 |                     value = try!(self.parse_expression_binary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:446:29
[INFO] [stdout]     |
[INFO] [stdout] 446 |                     value = try!(self.parse_expression_binary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:456:25
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let mut value = try!(self.parse_expression_primary());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:461:29
[INFO] [stdout]     |
[INFO] [stdout] 461 |                     value = try!(self.parse_expression_unary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:478:9
[INFO] [stdout]     |
[INFO] [stdout] 478 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:483:29
[INFO] [stdout]     |
[INFO] [stdout] 483 |             right: Box::new(try!(self.parse_expression_binary_operand())),
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/parser.rs:488:18
[INFO] [stdout]     |
[INFO] [stdout] 488 |         for _ in (self.queue.len()..n) {
[INFO] [stdout]     |                  ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 488 -         for _ in (self.queue.len()..n) {
[INFO] [stdout] 488 +         for _ in self.queue.len()..n {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/parser.rs:502:18
[INFO] [stdout]     |
[INFO] [stdout] 502 |         for _ in (0..n) {
[INFO] [stdout]     |                  ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 502 -         for _ in (0..n) {
[INFO] [stdout] 502 +         for _ in 0..n {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 98 |             'a'...'z' | 'A'...'Z' => self.read_identifier(),
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[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(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:98:28
[INFO] [stdout]    |
[INFO] [stdout] 98 |             'a'...'z' | 'A'...'Z' => self.read_identifier(),
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/compiler/lexer.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |             '0'...'9' => self.read_number(),
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:37
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:59
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                                           ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:204:81
[INFO] [stdout]     |
[INFO] [stdout] 204 |                         Some(c @ 'a'...'z') | Some(c @ 'A'...'Z') | Some(c @ '0'...'9') | Some(c @ ':') => {
[INFO] [stdout]     |                                                                                 ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:243:29
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 Some(c @ '0'...'9') => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/compiler/lexer.rs:261:37
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         Some(c @ '0'...'9') => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/lexer.rs:297:22
[INFO] [stdout]     |
[INFO] [stdout] 297 |             for _ in (0..count) {
[INFO] [stdout]     |                      ^        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 297 -             for _ in (0..count) {
[INFO] [stdout] 297 +             for _ in 0..count {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/compiler/lexer.rs:499:80
[INFO] [stdout]     |
[INFO] [stdout] 499 |         assert_eq!(lexer.read_token().unwrap(), Token(Symbol::Identifier, Some(("run".to_string()))));
[INFO] [stdout]     |                                                                                ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 499 -         assert_eq!(lexer.read_token().unwrap(), Token(Symbol::Identifier, Some(("run".to_string()))));
[INFO] [stdout] 499 +         assert_eq!(lexer.read_token().unwrap(), Token(Symbol::Identifier, Some("run".to_string())));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         try!(self.expect(Symbol::Equal));
[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]   --> src/compiler/parser.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let name = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let superclass = try!(self.parse_superclass_name());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:67:34
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let instance_variables = try!(self.parse_locals());
[INFO] [stdout]    |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:70:40
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let (name, method) = match try!(self.peek(1)) {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:71:49
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 Token(Symbol::Identifier, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:72:46
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 Token(Symbol::Keyword, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 Token(Symbol::OperatorSequence, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:74:71
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Token(ref symbol, _) if is_binary_operator(symbol) => try!(self.parse_method()),
[INFO] [stdout]    |                                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |             class_variables = try!(self.parse_locals());
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:86:44
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 let (name, method) = match try!(self.peek(1)) {
[INFO] [stdout]    |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:87:53
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     Token(Symbol::Identifier, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:88:50
[INFO] [stdout]    |
[INFO] [stdout] 88 |                     Token(Symbol::Keyword, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:89:59
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     Token(Symbol::OperatorSequence, _) => try!(self.parse_method()),
[INFO] [stdout]    |                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/compiler/parser.rs:90:75
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     Token(ref symbol, _) if is_binary_operator(symbol) => try!(self.parse_method()),
[INFO] [stdout]    |                                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |         try!(self.expect(Symbol::Equal));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:120:34
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let (name, parameters) = try!(self.parse_pattern());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 locals: try!(self.parse_locals()),
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:135:23
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 body: try!(self.parse_block_body()),
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:153:20
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let name = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:158:24
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut name = try!(self.expect(Symbol::Keyword)).unwrap();
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |         parameters.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:165:37
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     parameters.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:184:25
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let parameter = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             try!(self.expect(Symbol::Or));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |                 try!(self.expect(Symbol::Colon));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:210:33
[INFO] [stdout]     |
[INFO] [stdout] 210 |                 let parameter = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:214:21
[INFO] [stdout]     |
[INFO] [stdout] 214 |                     try!(self.expect(Symbol::Or));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:231:63
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 Ok(Token(Symbol::Exit, _)) => statements.push(try!(self.parse_result())),
[INFO] [stdout]     |                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:232:42
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 Ok(_) => statements.push(try!(self.parse_expression())),
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         try!(self.expect(Symbol::Exit));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:249:34
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let statement = Box::new(try!(self.parse_expression()));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 try!(self.expect(Symbol::Assign));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:258:34
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 assignments.push(try!(self.expect(Symbol::Identifier)).unwrap());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:271:28
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 variables: try!(self.parse_assignments()),
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:272:33
[INFO] [stdout]     |
[INFO] [stdout] 272 |                 value: Box::new(try!(self.parse_expression())),
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:275:34
[INFO] [stdout]     |
[INFO] [stdout] 275 |             let mut expression = try!(self.parse_expression_primary());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:279:57
[INFO] [stdout]     |
[INFO] [stdout] 279 |                     Ok(Token(Symbol::Identifier, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:280:54
[INFO] [stdout]     |
[INFO] [stdout] 280 |                     Ok(Token(Symbol::Keyword, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:281:63
[INFO] [stdout]     |
[INFO] [stdout] 281 |                     Ok(Token(Symbol::OperatorSequence, _)) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:282:79
[INFO] [stdout]     |
[INFO] [stdout] 282 |                     Ok(Token(ref symbol, _)) if is_binary_operator(symbol) => try!(self.parse_expression_messages(expression)),
[INFO] [stdout]     |                                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:308:32
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let Token(symbol, _) = try!(self.peek(1));
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:313:38
[INFO] [stdout]     |
[INFO] [stdout] 313 |                         expression = try!(self.parse_expression_unary_message(expression));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:329:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         try!(self.expect(Symbol::NewBlock));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         try!(self.expect(Symbol::EndBlock));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |             parameters: try!(self.parse_block_parameters()),
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:332:21
[INFO] [stdout]     |
[INFO] [stdout] 332 |             locals: try!(self.parse_locals()),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:333:19
[INFO] [stdout]     |
[INFO] [stdout] 333 |             body: try!(self.parse_block_body()),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         try!(self.expect(Symbol::NewTerm));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 343 |         try!(self.expect(Symbol::EndTerm));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:342:21
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let value = try!(self.parse_expression());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:349:24
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let variable = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let value = try!(self.expect(Symbol::String)).unwrap();
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |         try!(self.expect(Symbol::Pound));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |         try!(self.expect(Symbol::Minus));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:412:23
[INFO] [stdout]     |
[INFO] [stdout] 412 |         let message = try!(self.expect(Symbol::Identifier)).unwrap();
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:423:37
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     parameters.push(try!(self.parse_expression_formula()));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:438:25
[INFO] [stdout]     |
[INFO] [stdout] 438 |         let mut value = try!(self.parse_expression_binary_operand());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:443:29
[INFO] [stdout]     |
[INFO] [stdout] 443 |                     value = try!(self.parse_expression_binary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:446:29
[INFO] [stdout]     |
[INFO] [stdout] 446 |                     value = try!(self.parse_expression_binary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/compiler/lexer.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ascii::AsciiExt;
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:456:25
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let mut value = try!(self.parse_expression_primary());
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:461:29
[INFO] [stdout]     |
[INFO] [stdout] 461 |                     value = try!(self.parse_expression_unary_message(value));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:478:9
[INFO] [stdout]     |
[INFO] [stdout] 478 |         try!(self.consume(1));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/compiler/parser.rs:483:29
[INFO] [stdout]     |
[INFO] [stdout] 483 |             right: Box::new(try!(self.parse_expression_binary_operand())),
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/parser.rs:488:18
[INFO] [stdout]     |
[INFO] [stdout] 488 |         for _ in (self.queue.len()..n) {
[INFO] [stdout]     |                  ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 488 -         for _ in (self.queue.len()..n) {
[INFO] [stdout] 488 +         for _ in self.queue.len()..n {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/compiler/parser.rs:502:18
[INFO] [stdout]     |
[INFO] [stdout] 502 |         for _ in (0..n) {
[INFO] [stdout]     |                  ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 502 -         for _ in (0..n) {
[INFO] [stdout] 502 +         for _ in 0..n {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/compiler/lexer.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ascii::AsciiExt;
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/compiler/lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/compiler/lexer.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     IoError(io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 22 |     IoError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/compiler/parser.rs:301:35
[INFO] [stdout]     |
[INFO] [stdout] 301 |             Ok(t) => unreachable!(format!("token: {:#?}", t)),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `unreachable!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 301 -             Ok(t) => unreachable!(format!("token: {:#?}", t)),
[INFO] [stdout] 301 +             Ok(t) => unreachable!("token: {:#?}", t),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/compiler/lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/compiler/lexer.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     IoError(io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 22 |     IoError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/compiler/parser.rs:301:35
[INFO] [stdout]     |
[INFO] [stdout] 301 |             Ok(t) => unreachable!(format!("token: {:#?}", t)),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `unreachable!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 301 -             Ok(t) => unreachable!(format!("token: {:#?}", t)),
[INFO] [stdout] 301 +             Ok(t) => unreachable!("token: {:#?}", t),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "45721b62cfb9f20fce288a56c6903d091415bcc8c8b981a150223d4b8943cfdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45721b62cfb9f20fce288a56c6903d091415bcc8c8b981a150223d4b8943cfdd", kill_on_drop: false }`
[INFO] [stdout] 45721b62cfb9f20fce288a56c6903d091415bcc8c8b981a150223d4b8943cfdd
