[INFO] fetching crate token 1.0.0-rc1...
[INFO] testing token-1.0.0-rc1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate token 1.0.0-rc1 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate token 1.0.0-rc1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate token 1.0.0-rc1
[INFO] finished tweaking crates.io crate token 1.0.0-rc1
[INFO] tweaked toml for crates.io crate token 1.0.0-rc1 written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b09e382d7782affc47f6cc7c7427ac042fca5d1a0a79753d98f6e0bd9243fbaf
[INFO] running `Command { std: "docker" "start" "-a" "b09e382d7782affc47f6cc7c7427ac042fca5d1a0a79753d98f6e0bd9243fbaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b09e382d7782affc47f6cc7c7427ac042fca5d1a0a79753d98f6e0bd9243fbaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b09e382d7782affc47f6cc7c7427ac042fca5d1a0a79753d98f6e0bd9243fbaf", kill_on_drop: false }`
[INFO] [stdout] b09e382d7782affc47f6cc7c7427ac042fca5d1a0a79753d98f6e0bd9243fbaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84a8a330585d1bcc1276f4cbcd4ecb63d9775225dd9634c115e91be6dc957a87
[INFO] running `Command { std: "docker" "start" "-a" "84a8a330585d1bcc1276f4cbcd4ecb63d9775225dd9634c115e91be6dc957a87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling token v1.0.0-rc1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::io::ReadExt`
[INFO] [stdout]   --> src/lib.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 | use std::io::{Read, ReadExt};
[INFO] [stdout]    |                     ^^^^^^^ no `ReadExt` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Chars` in module `io`
[INFO] [stdout]   --> src/lib.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     chars: io::Chars<R>,
[INFO] [stdout]    |                ^^^^^ not found in `io`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 47 | use std::str::Chars;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/lib.rs:83:37
[INFO] [stdout]    |
[INFO] [stdout] 83 |     type Item = Result<&'a str, io::CharsError>;
[INFO] [stdout]    |                                     ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/lib.rs:87:51
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn next(&mut self) -> Option<Result<&str, io::CharsError>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/lib.rs:175:37
[INFO] [stdout]     |
[INFO] [stdout] 175 |     type Item = Result<&'b str, io::CharsError>;
[INFO] [stdout]     |                                     ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/lib.rs:178:51
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn next(&mut self) -> Option<Result<&str, io::CharsError>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates
[INFO] [stdout]   --> src/lib.rs:82:6
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl<'a, R: Read> Iterator for Tokenizer<R> {
[INFO] [stdout]    |      ^^ unconstrained lifetime parameter
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0207]: the lifetime parameter `'b` is not constrained by the impl trait, self type, or predicates
[INFO] [stdout]    --> src/lib.rs:174:11
[INFO] [stdout]     |
[INFO] [stdout] 174 | impl <'a, 'b, R: Read> Iterator for SentenceSplitter<'a, R> {
[INFO] [stdout]     |           ^^ unconstrained lifetime parameter
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0207, E0412, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0207`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `token` due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "84a8a330585d1bcc1276f4cbcd4ecb63d9775225dd9634c115e91be6dc957a87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84a8a330585d1bcc1276f4cbcd4ecb63d9775225dd9634c115e91be6dc957a87", kill_on_drop: false }`
[INFO] [stdout] 84a8a330585d1bcc1276f4cbcd4ecb63d9775225dd9634c115e91be6dc957a87