[INFO] updating cached repository https://github.com/suhr/conc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 572cdd54dd2c90795976d24f4da669a789b9024c
[INFO] testing suhr/conc against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhr%2Fconc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/suhr/conc on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/suhr/conc
[INFO] finished tweaking git repo https://github.com/suhr/conc
[INFO] tweaked toml for git repo https://github.com/suhr/conc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/suhr/conc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b82a40d7fbd211defa96645c3d518cfeb91358471c2bf8566449e709d4034e8d
[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" "b82a40d7fbd211defa96645c3d518cfeb91358471c2bf8566449e709d4034e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b82a40d7fbd211defa96645c3d518cfeb91358471c2bf8566449e709d4034e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b82a40d7fbd211defa96645c3d518cfeb91358471c2bf8566449e709d4034e8d", kill_on_drop: false }`
[INFO] [stdout] b82a40d7fbd211defa96645c3d518cfeb91358471c2bf8566449e709d4034e8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", 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] c6cff13064547d6edb5a393c32b825b40e80fd82c0f05ac832903b859115e07a
[INFO] running `Command { std: "docker" "start" "-a" "c6cff13064547d6edb5a393c32b825b40e80fd82c0f05ac832903b859115e07a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling conc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::io::Chars`
[INFO] [stdout]  --> src/parser/lexer.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Chars, BufReader, Read};
[INFO] [stdout]   |                     ^^^^^ no `Chars` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `self::io::CharsError`
[INFO] [stdout]   --> src/parser/lexer.rs:86:23
[INFO] [stdout]    |
[INFO] [stdout] 86 |         use self::io::CharsError::*;
[INFO] [stdout]    |                       ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/parser/lexer.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl ::std::convert::From<io::CharsError> for LexerError {
[INFO] [stdout]    |                               ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/parser/lexer.rs:85:22
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn from(err: io::CharsError) -> Self {
[INFO] [stdout]    |                      ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0531]: cannot find tuple struct or tuple variant `Other` in this scope
[INFO] [stdout]   --> src/parser/lexer.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             Other(e) => LexerError::IoError(e),
[INFO] [stdout]    |             ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(io)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         '0' ... '9' => true,
[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/parser/lexer.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         'a' ... 'f'
[INFO] [stdout]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:126:15
[INFO] [stdout]     |
[INFO] [stdout] 126 |         | 'A' ... 'F' => true,
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         'a' ... 'z'
[INFO] [stdout]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:134:15
[INFO] [stdout]     |
[INFO] [stdout] 134 |         | 'A' ... 'Z'
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         '!' ... '&'
[INFO] [stdout]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:143:15
[INFO] [stdout]     |
[INFO] [stdout] 143 |         | '*' ... '/'
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexer.rs:144:15
[INFO] [stdout]     |
[INFO] [stdout] 144 |         | ':' ... '@'
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LexerError`
[INFO] [stdout]    --> src/parser/lexer.rs:588:24
[INFO] [stdout]     |
[INFO] [stdout] 588 |     use super::{Lexer, LexerError};
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Lexeme` is imported redundantly
[INFO] [stdout]    --> src/parser/mod.rs:536:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | use self::lexer::{Lexer, Token, Lexeme, LexerError, Position};
[INFO] [stdout]     |                                 ------ the item `Lexeme` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 536 |     use self::Lexeme;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `std::io::BufReader<R>` in the current scope
[INFO] [stdout]    --> src/parser/lexer.rs:164:52
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let mut char_iter = BufReader::new(reader).chars();
[INFO] [stdout]     |                                                    ^^^^^ method not found in `std::io::BufReader<R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:223:28
[INFO] [stdout]     |
[INFO] [stdout] 223 |             position: self.cursor_position(),
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:229:30
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:279:36
[INFO] [stdout]     |
[INFO] [stdout] 279 |             None => return Ok(self.point_token(Lexeme::Eof)),
[INFO] [stdout]     |                                    ^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:326:30
[INFO] [stdout]     |
[INFO] [stdout] 326 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:355:30
[INFO] [stdout]     |
[INFO] [stdout] 355 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:427:30
[INFO] [stdout]     |
[INFO] [stdout] 427 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:464:30
[INFO] [stdout]     |
[INFO] [stdout] 464 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:505:30
[INFO] [stdout]     |
[INFO] [stdout] 505 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/parser/lexer.rs:552:30
[INFO] [stdout]     |
[INFO] [stdout] 552 |         let start_pos = self.cursor_point();
[INFO] [stdout]     |                              ^^^^^^^^^^^^ cannot infer type for type parameter `R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/analysis/mod.rs:365:21
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     unimplemented!();
[INFO] [stdout]     |                     ----------------- any code following this expression is unreachable
[INFO] [stdout] 365 |                     trans.level += 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0412, E0432, E0531, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `conc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c6cff13064547d6edb5a393c32b825b40e80fd82c0f05ac832903b859115e07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6cff13064547d6edb5a393c32b825b40e80fd82c0f05ac832903b859115e07a", kill_on_drop: false }`
[INFO] [stdout] c6cff13064547d6edb5a393c32b825b40e80fd82c0f05ac832903b859115e07a