[INFO] fetching crate malk-lexer 0.1.1...
[INFO] testing malk-lexer-0.1.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate malk-lexer 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate malk-lexer 0.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate malk-lexer 0.1.1
[INFO] finished tweaking crates.io crate malk-lexer 0.1.1
[INFO] tweaked toml for crates.io crate malk-lexer 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-brackets v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80c8e3ae175b82c2fa543b438a2c3175a2de9111a3af81871f3f569bee3e192e
[INFO] running `Command { std: "docker" "start" "-a" "80c8e3ae175b82c2fa543b438a2c3175a2de9111a3af81871f3f569bee3e192e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80c8e3ae175b82c2fa543b438a2c3175a2de9111a3af81871f3f569bee3e192e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c8e3ae175b82c2fa543b438a2c3175a2de9111a3af81871f3f569bee3e192e", kill_on_drop: false }`
[INFO] [stdout] 80c8e3ae175b82c2fa543b438a2c3175a2de9111a3af81871f3f569bee3e192e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1089b05f67c48333a205f66ac2cf98f12882a1a34010692ce086fd891d5bb3ff
[INFO] running `Command { std: "docker" "start" "-a" "1089b05f67c48333a205f66ac2cf98f12882a1a34010692ce086fd891d5bb3ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling unicode-brackets v0.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling malk-lexer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/symbol_table.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 try!(recurse(symbols, postfix_list, complete_list, new_postfix));
[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/symbol_table.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 try!(recurse(symbols,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:186:23
[INFO] [stdout]     |
[INFO] [stdout] 186 |             let sub = try!(sub_lex(p, src, symbols));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lex.rs:231:20
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 '0'...'9' => Ok(some_char as u32 - '0' as u32),
[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/lex.rs:232:20
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 'a'...'f' => Ok(some_char as u32 - 'a' as u32 + 10),
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:249:38
[INFO] [stdout]     |
[INFO] [stdout] 249 |                 let (new_c, new_p) = try!(next(p));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:265:42
[INFO] [stdout]     |
[INFO] [stdout] 265 |                     let (esc_c, esc_p) = try!(next(new_p));
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:275:52
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   let (nib0, nib0_end) = try!(next(esc_p));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:276:52
[INFO] [stdout]     |
[INFO] [stdout] 276 | ...                   let (nib1, nib1_end) = try!(next(nib0_end));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:277:40
[INFO] [stdout]     |
[INFO] [stdout] 277 | ...                   let nib0 = try!(from_hex(nib0, esc_p));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:278:40
[INFO] [stdout]     |
[INFO] [stdout] 278 | ...                   let nib1 = try!(from_hex(nib1, nib0_end));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:279:30
[INFO] [stdout]     |
[INFO] [stdout] 279 | ...                   (try!(from_u32((nib0 << 4) | nib1, p)), nib1_end)
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:282:52
[INFO] [stdout]     |
[INFO] [stdout] 282 | ...                   let (open_c, open_p) = try!(next(esc_p));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:293:54
[INFO] [stdout]     |
[INFO] [stdout] 293 | ...                   let (nib, nib_end) = try!(next(end));
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:299:43
[INFO] [stdout]     |
[INFO] [stdout] 299 | ...                   let nib = try!(from_hex(nib, end));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:304:58
[INFO] [stdout]     |
[INFO] [stdout] 304 | ...                   let (close_c, close_p) = try!(next(end));
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:312:30
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   (try!(from_u32(code, p)), end)
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:396:15
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let sub = try!(sub_lex(pos, src, symbols));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(pattern)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(unicode)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `unicode`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(unicode)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:163:14
[INFO] [stdout]     |
[INFO] [stdout] 163 |         if c.is_xid_start() {
[INFO] [stdout]     |              ^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:72:8
[INFO] [stdout]     |
[INFO] [stdout] 72  |     fn is_xid_start(self) -> bool;
[INFO] [stdout]     |        ------------ the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:170:23
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 if !c.is_xid_continue() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:80:8
[INFO] [stdout]     |
[INFO] [stdout] 80  |     fn is_xid_continue(self) -> bool;
[INFO] [stdout]     |        --------------- the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:370:26
[INFO] [stdout]     |
[INFO] [stdout] 370 |                        c.is_xid_start() ||
[INFO] [stdout]     |                          ^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:72:8
[INFO] [stdout]     |
[INFO] [stdout] 72  |     fn is_xid_start(self) -> bool;
[INFO] [stdout]     |        ------------ the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `malk-lexer` (lib) due to 7 previous errors; 18 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1089b05f67c48333a205f66ac2cf98f12882a1a34010692ce086fd891d5bb3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1089b05f67c48333a205f66ac2cf98f12882a1a34010692ce086fd891d5bb3ff", kill_on_drop: false }`
[INFO] [stdout] 1089b05f67c48333a205f66ac2cf98f12882a1a34010692ce086fd891d5bb3ff
[INFO] testing malk-lexer-0.1.1 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate malk-lexer 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate malk-lexer 0.1.1 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate malk-lexer 0.1.1
[INFO] finished tweaking crates.io crate malk-lexer 0.1.1
[INFO] tweaked toml for crates.io crate malk-lexer 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adcf53ea37652781cf4adf1a224973aeac4396de21c01ed2563a752cc92ad332
[INFO] running `Command { std: "docker" "start" "-a" "adcf53ea37652781cf4adf1a224973aeac4396de21c01ed2563a752cc92ad332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adcf53ea37652781cf4adf1a224973aeac4396de21c01ed2563a752cc92ad332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adcf53ea37652781cf4adf1a224973aeac4396de21c01ed2563a752cc92ad332", kill_on_drop: false }`
[INFO] [stdout] adcf53ea37652781cf4adf1a224973aeac4396de21c01ed2563a752cc92ad332
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa278c263cc5213cd54cdf656463164e5382def304a9fa7eba6b1e08a870e54f
[INFO] running `Command { std: "docker" "start" "-a" "fa278c263cc5213cd54cdf656463164e5382def304a9fa7eba6b1e08a870e54f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-brackets v0.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling malk-lexer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/symbol_table.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 try!(recurse(symbols, postfix_list, complete_list, new_postfix));
[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/symbol_table.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 try!(recurse(symbols,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:186:23
[INFO] [stdout]     |
[INFO] [stdout] 186 |             let sub = try!(sub_lex(p, src, symbols));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lex.rs:231:20
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 '0'...'9' => Ok(some_char as u32 - '0' as u32),
[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/lex.rs:232:20
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 'a'...'f' => Ok(some_char as u32 - 'a' as u32 + 10),
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:249:38
[INFO] [stdout]     |
[INFO] [stdout] 249 |                 let (new_c, new_p) = try!(next(p));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:265:42
[INFO] [stdout]     |
[INFO] [stdout] 265 |                     let (esc_c, esc_p) = try!(next(new_p));
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:275:52
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   let (nib0, nib0_end) = try!(next(esc_p));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:276:52
[INFO] [stdout]     |
[INFO] [stdout] 276 | ...                   let (nib1, nib1_end) = try!(next(nib0_end));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:277:40
[INFO] [stdout]     |
[INFO] [stdout] 277 | ...                   let nib0 = try!(from_hex(nib0, esc_p));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:278:40
[INFO] [stdout]     |
[INFO] [stdout] 278 | ...                   let nib1 = try!(from_hex(nib1, nib0_end));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:279:30
[INFO] [stdout]     |
[INFO] [stdout] 279 | ...                   (try!(from_u32((nib0 << 4) | nib1, p)), nib1_end)
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:282:52
[INFO] [stdout]     |
[INFO] [stdout] 282 | ...                   let (open_c, open_p) = try!(next(esc_p));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:293:54
[INFO] [stdout]     |
[INFO] [stdout] 293 | ...                   let (nib, nib_end) = try!(next(end));
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:299:43
[INFO] [stdout]     |
[INFO] [stdout] 299 | ...                   let nib = try!(from_hex(nib, end));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:304:58
[INFO] [stdout]     |
[INFO] [stdout] 304 | ...                   let (close_c, close_p) = try!(next(end));
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:312:30
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   (try!(from_u32(code, p)), end)
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lex.rs:396:15
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let sub = try!(sub_lex(pos, src, symbols));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(pattern)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(unicode)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `unicode`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(unicode)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:163:14
[INFO] [stdout]     |
[INFO] [stdout] 163 |         if c.is_xid_start() {
[INFO] [stdout]     |              ^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:72:8
[INFO] [stdout]     |
[INFO] [stdout] 72  |     fn is_xid_start(self) -> bool;
[INFO] [stdout]     |        ------------ the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:170:23
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 if !c.is_xid_continue() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:80:8
[INFO] [stdout]     |
[INFO] [stdout] 80  |     fn is_xid_continue(self) -> bool;
[INFO] [stdout]     |        --------------- the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stdout]    --> src/lex.rs:370:26
[INFO] [stdout]     |
[INFO] [stdout] 370 |                        c.is_xid_start() ||
[INFO] [stdout]     |                          ^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unicode-xid-0.0.3/src/lib.rs:72:8
[INFO] [stdout]     |
[INFO] [stdout] 72  |     fn is_xid_start(self) -> bool;
[INFO] [stdout]     |        ------------ the method is available for `char` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use unicode_xid::UnicodeXID;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `malk-lexer` (lib) due to 7 previous errors; 18 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fa278c263cc5213cd54cdf656463164e5382def304a9fa7eba6b1e08a870e54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa278c263cc5213cd54cdf656463164e5382def304a9fa7eba6b1e08a870e54f", kill_on_drop: false }`
[INFO] [stdout] fa278c263cc5213cd54cdf656463164e5382def304a9fa7eba6b1e08a870e54f
