[INFO] updating cached repository suhr/conc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/suhr/conc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/suhr/conc" "work/ex/beta-1.38-1/sources/1.37.0/gh/suhr/conc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/suhr/conc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/suhr/conc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/suhr/conc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/suhr/conc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 572cdd54dd2c90795976d24f4da669a789b9024c
[INFO] sha for GitHub repo suhr/conc: 572cdd54dd2c90795976d24f4da669a789b9024c
[INFO] validating manifest of suhr/conc on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of suhr/conc on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing suhr/conc
[INFO] finished frobbing suhr/conc
[INFO] frobbed toml for suhr/conc written to work/ex/beta-1.38-1/sources/1.37.0/gh/suhr/conc/Cargo.toml
[INFO] started frobbing suhr/conc
[INFO] finished frobbing suhr/conc
[INFO] frobbed toml for suhr/conc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/suhr/conc/Cargo.toml
[INFO] crate suhr/conc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing suhr/conc against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/suhr/conc:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6fde5809f56899abeee8b49f4654af4aa4d4b3397b3b189efaa72000f75bd976
[INFO] running `"docker" "start" "-a" "6fde5809f56899abeee8b49f4654af4aa4d4b3397b3b189efaa72000f75bd976"`
[INFO] [stderr]    Compiling conc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::io::Chars`
[INFO] [stderr]  --> src/parser/lexer.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, Chars, BufReader, Read};
[INFO] [stderr]   |                     ^^^^^ no `Chars` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `self::io::CharsError`
[INFO] [stderr]   --> src/parser/lexer.rs:86:23
[INFO] [stderr]    |
[INFO] [stderr] 86 |         use self::io::CharsError::*;
[INFO] [stderr]    |                       ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stderr]   --> src/parser/lexer.rs:84:31
[INFO] [stderr]    |
[INFO] [stderr] 84 | impl ::std::convert::From<io::CharsError> for LexerError {
[INFO] [stderr]    |                               ^^^^^^^^^^ not found in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stderr]   --> src/parser/lexer.rs:85:22
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn from(err: io::CharsError) -> Self {
[INFO] [stderr]    |                      ^^^^^^^^^^ not found in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Other` in this scope
[INFO] [stderr]   --> src/parser/lexer.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |             Other(e) => LexerError::IoError(e),
[INFO] [stderr]    |             ^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(io)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::io::CharsError::*`
[INFO] [stderr]   --> src/parser/lexer.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         use self::io::CharsError::*;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |         '0' ... '9' => true,
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         'a' ... 'f'
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:126:15
[INFO] [stderr]     |
[INFO] [stderr] 126 |         | 'A' ... 'F' => true,
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |         'a' ... 'z'
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:134:15
[INFO] [stderr]     |
[INFO] [stderr] 134 |         | 'A' ... 'Z'
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         '!' ... '&'
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:143:15
[INFO] [stderr]     |
[INFO] [stderr] 143 |         | '*' ... '/'
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser/lexer.rs:144:15
[INFO] [stderr]     |
[INFO] [stderr] 144 |         | ':' ... '@'
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LexerError`
[INFO] [stderr]    --> src/parser/lexer.rs:588:24
[INFO] [stderr]     |
[INFO] [stderr] 588 |     use super::{Lexer, LexerError};
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Lexeme` is imported redundantly
[INFO] [stderr]    --> src/parser/mod.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | use self::lexer::{Lexer, Token, Lexeme, LexerError, Position};
[INFO] [stderr]     |                                 ------ the item `Lexeme` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 536 |     use self::Lexeme;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `chars` found for type `std::io::BufReader<R>` in the current scope
[INFO] [stderr]    --> src/parser/lexer.rs:164:52
[INFO] [stderr]     |
[INFO] [stderr] 164 |         let mut char_iter = BufReader::new(reader).chars();
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/analysis/mod.rs:365:21
[INFO] [stderr]     |
[INFO] [stderr] 365 |                     trans.level += 1;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `conc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6fde5809f56899abeee8b49f4654af4aa4d4b3397b3b189efaa72000f75bd976"`
[INFO] running `"docker" "rm" "-f" "6fde5809f56899abeee8b49f4654af4aa4d4b3397b3b189efaa72000f75bd976"`
[INFO] [stdout] 6fde5809f56899abeee8b49f4654af4aa4d4b3397b3b189efaa72000f75bd976