[INFO] cloning repository https://github.com/CopperWasp/LETREC_interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CopperWasp/LETREC_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCopperWasp%2FLETREC_interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCopperWasp%2FLETREC_interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92152c21cb291e721405a590cfca7e647db1aa44
[INFO] checking CopperWasp/LETREC_interpreter against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCopperWasp%2FLETREC_interpreter" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CopperWasp/LETREC_interpreter on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CopperWasp/LETREC_interpreter
[INFO] finished tweaking git repo https://github.com/CopperWasp/LETREC_interpreter
[INFO] tweaked toml for git repo https://github.com/CopperWasp/LETREC_interpreter written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/CopperWasp/LETREC_interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cc7302577dbf136ab795c84d724728fa57cecc4ce4ff9e92895e313d7a92898e
[INFO] running `Command { std: "docker" "start" "-a" "cc7302577dbf136ab795c84d724728fa57cecc4ce4ff9e92895e313d7a92898e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc7302577dbf136ab795c84d724728fa57cecc4ce4ff9e92895e313d7a92898e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7302577dbf136ab795c84d724728fa57cecc4ce4ff9e92895e313d7a92898e", kill_on_drop: false }`
[INFO] [stdout] cc7302577dbf136ab795c84d724728fa57cecc4ce4ff9e92895e313d7a92898e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d5ecf725f7a538f0c3a3b35bf2eea2aa5ed2d1378582892e342a00640da924a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2d5ecf725f7a538f0c3a3b35bf2eea2aa5ed2d1378582892e342a00640da924a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking let_lang_proj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `VarExp` in this scope
[INFO] [stdout]   --> src/let_lang_exp.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(VarExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |             ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `let_lang_exp::LetLangExp::VarExp`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(let_lang_exp::LetLangExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `VarExp` in this scope
[INFO] [stdout]   --> src/let_lang_exp.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(VarExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |             ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `let_lang_env::test::LetLangExp::VarExp`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(let_lang_env::test::LetLangExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/let_lang_scanner.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         try!(lexer.scan()); // May return from tokenize() w/ Err(LexErr). If no error, then
[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/let_lang_scanner.rs:124:39
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   let tok = try!(self.scan_keywrd_ident_bool());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:126:29
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:133:47
[INFO] [stdout]     |
[INFO] [stdout] 133 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:135:37
[INFO] [stdout]     |
[INFO] [stdout] 135 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:149:47
[INFO] [stdout]     |
[INFO] [stdout] 149 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:162:29
[INFO] [stdout]     |
[INFO] [stdout] 162 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         'a' ... 'z' | 'A' ... 'Z' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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/let_lang_scanner.rs:123:43
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         'a' ... 'z' | 'A' ... 'Z' => {
[INFO] [stdout]     |                                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:130:41
[INFO] [stdout]     |
[INFO] [stdout] 130 | ...                   Some('0'...'9') => {
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:146:41
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Some('0'...'9') => {
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:159:29
[INFO] [stdout]     |
[INFO] [stdout] 159 |                         '0' ... '9' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:181:29
[INFO] [stdout]     |
[INFO] [stdout] 181 |                         'a' ... 'z' => { s.push(c);
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:183:29
[INFO] [stdout]     |
[INFO] [stdout] 183 |                         'A' ... 'Z' => { s.push(c);
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:230:28
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         '0'...'9' => {
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         try!(self.match_token(&Token::Minus));   // return with Err(ParseErr) if no match
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         try!(self.match_token(&Token::Lparen));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:178:18
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let e1 = try!(self.parse_let_lang_exp()); // return with Err(ParseErr) if no parse
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         try!(self.match_token(&Token::Comma));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:180:18
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let e2 = try!(self.parse_let_lang_exp());
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |         try!(self.match_token(&Token::Rparen));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `let_lang_exp::*`
[INFO] [stdout]   --> src/let_lang_env.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use let_lang_exp::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/let_lang_scanner.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         try!(lexer.scan()); // May return from tokenize() w/ Err(LexErr). If no error, then
[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/let_lang_scanner.rs:124:39
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   let tok = try!(self.scan_keywrd_ident_bool());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:126:29
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:133:47
[INFO] [stdout]     |
[INFO] [stdout] 133 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:135:37
[INFO] [stdout]     |
[INFO] [stdout] 135 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:149:47
[INFO] [stdout]     |
[INFO] [stdout] 149 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 | ...                   let val = try!(self.parse_number());
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_scanner.rs:162:29
[INFO] [stdout]     |
[INFO] [stdout] 162 | ...                   try!(self.parse_whitespace_paren_or_eoi());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         'a' ... 'z' | 'A' ... 'Z' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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/let_lang_scanner.rs:123:43
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         'a' ... 'z' | 'A' ... 'Z' => {
[INFO] [stdout]     |                                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:130:41
[INFO] [stdout]     |
[INFO] [stdout] 130 | ...                   Some('0'...'9') => {
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:146:41
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Some('0'...'9') => {
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:159:29
[INFO] [stdout]     |
[INFO] [stdout] 159 |                         '0' ... '9' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:181:29
[INFO] [stdout]     |
[INFO] [stdout] 181 |                         'a' ... 'z' => { s.push(c);
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:183:29
[INFO] [stdout]     |
[INFO] [stdout] 183 |                         'A' ... 'Z' => { s.push(c);
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/let_lang_scanner.rs:230:28
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         '0'...'9' => {
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         try!(self.match_token(&Token::Minus));   // return with Err(ParseErr) if no match
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         try!(self.match_token(&Token::Lparen));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:178:18
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let e1 = try!(self.parse_let_lang_exp()); // return with Err(ParseErr) if no parse
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         try!(self.match_token(&Token::Comma));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:180:18
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let e2 = try!(self.parse_let_lang_exp());
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/let_lang_parser.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |         try!(self.match_token(&Token::Rparen));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:44:90
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn new_proc_exp(v: &String, arg: &LetLangExp, env: &let_lang_env::LetLangEnv) -> Self{
[INFO] [stdout]    |            ------------                                                                  ^^^^ expected enum `let_lang_exp::LetLangExp`, found `()`
[INFO] [stdout]    |            |
[INFO] [stdout]    |            implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 45 |         LetLangExp::ProcExp(v.clone(), Rc::new(arg.clone()), Rc::new(env.clone()));
[INFO] [stdout]    |                                                                                   - help: consider removing this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0023]: this pattern has 2 fields, but the corresponding tuple variant has 3 fields
[INFO] [stdout]   --> src/let_lang_exp.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(VarExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |     ------------------------------------------------------------- tuple variant defined here
[INFO] [stdout] ...
[INFO] [stdout] 80 |             LetLangExp::ProcExp(v, e)       => {let mut temp= "proc( ".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ expected 3 fields, found 2
[INFO] [stdout]    |
[INFO] [stdout] help: use `_` to explicitly ignore each field
[INFO] [stdout]    |
[INFO] [stdout] 80 |             LetLangExp::ProcExp(v, e, _)       => {let mut temp= "proc( ".to_string();
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:86:63
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...                   temp.push_str(e1.to_string());
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected `&str`, found struct `String`
[INFO] [stdout]    |                                     help: consider borrowing here: `&e1.to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:88:63
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   temp.push_str(e2.to_string());
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected `&str`, found struct `String`
[INFO] [stdout]    |                                     help: consider borrowing here: `&e2.to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:44:90
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn new_proc_exp(v: &String, arg: &LetLangExp, env: &let_lang_env::LetLangEnv) -> Self{
[INFO] [stdout]    |            ------------                                                                  ^^^^ expected enum `let_lang_exp::LetLangExp`, found `()`
[INFO] [stdout]    |            |
[INFO] [stdout]    |            implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 45 |         LetLangExp::ProcExp(v.clone(), Rc::new(arg.clone()), Rc::new(env.clone()));
[INFO] [stdout]    |                                                                                   - help: consider removing this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0023]: this pattern has 2 fields, but the corresponding tuple variant has 3 fields
[INFO] [stdout]   --> src/let_lang_exp.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ProcExp(VarExp, Rc<LetLangExp>, Rc<let_lang_env::LetLangEnv>),  //proc-exp(var, body)
[INFO] [stdout]    |     ------------------------------------------------------------- tuple variant defined here
[INFO] [stdout] ...
[INFO] [stdout] 80 |             LetLangExp::ProcExp(v, e)       => {let mut temp= "proc( ".to_string();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ expected 3 fields, found 2
[INFO] [stdout]    |
[INFO] [stdout] help: use `_` to explicitly ignore each field
[INFO] [stdout]    |
[INFO] [stdout] 80 |             LetLangExp::ProcExp(v, e, _)       => {let mut temp= "proc( ".to_string();
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:86:63
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...                   temp.push_str(e1.to_string());
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected `&str`, found struct `String`
[INFO] [stdout]    |                                     help: consider borrowing here: `&e1.to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_exp.rs:88:63
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   temp.push_str(e2.to_string());
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected `&str`, found struct `String`
[INFO] [stdout]    |                                     help: consider borrowing here: `&e2.to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0023, E0308, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0023`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `let_lang_proj`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/let_lang_env.rs:65:63
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let env2 = null_env.extend_env(&("var1".to_string()), 25);
[INFO] [stdout]    |                                                               ^^
[INFO] [stdout]    |                                                               |
[INFO] [stdout]    |                                                               expected enum `int_bool::IntBool`, found integer
[INFO] [stdout]    |                                                               help: try using a variant of the expected enum: `int_bool::IntBool::Integer(25)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0023, E0308, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0023`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2d5ecf725f7a538f0c3a3b35bf2eea2aa5ed2d1378582892e342a00640da924a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d5ecf725f7a538f0c3a3b35bf2eea2aa5ed2d1378582892e342a00640da924a", kill_on_drop: false }`
[INFO] [stdout] 2d5ecf725f7a538f0c3a3b35bf2eea2aa5ed2d1378582892e342a00640da924a