[INFO] fetching crate ngrams 1.0.1...
[INFO] checking ngrams-1.0.1 against master#6b6610b8bd5112bbb3bd2b73a97250cb06979505 for pr-102713
[INFO] extracting crate ngrams 1.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ngrams 1.0.1 on toolchain 6b6610b8bd5112bbb3bd2b73a97250cb06979505
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6b6610b8bd5112bbb3bd2b73a97250cb06979505" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ngrams 1.0.1
[INFO] finished tweaking crates.io crate ngrams 1.0.1
[INFO] tweaked toml for crates.io crate ngrams 1.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6b6610b8bd5112bbb3bd2b73a97250cb06979505" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6b6610b8bd5112bbb3bd2b73a97250cb06979505" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clippy v0.0.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+6b6610b8bd5112bbb3bd2b73a97250cb06979505" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2733537138d89dc0af914f38cdec3d260e8e342abcb1b904af07a5f921385754
[INFO] running `Command { std: "docker" "start" "-a" "2733537138d89dc0af914f38cdec3d260e8e342abcb1b904af07a5f921385754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2733537138d89dc0af914f38cdec3d260e8e342abcb1b904af07a5f921385754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2733537138d89dc0af914f38cdec3d260e8e342abcb1b904af07a5f921385754", kill_on_drop: false }`
[INFO] [stdout] 2733537138d89dc0af914f38cdec3d260e8e342abcb1b904af07a5f921385754
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+6b6610b8bd5112bbb3bd2b73a97250cb06979505" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 953e70572bdda2a8b098b317f3a8f9cecad97565f24657ce0fab90035c58801b
[INFO] running `Command { std: "docker" "start" "-a" "953e70572bdda2a8b098b317f3a8f9cecad97565f24657ce0fab90035c58801b", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking ngrams v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn ngrams(self, usize) -> Ngrams<'a, T>;
[INFO] [stdout]    |                     ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     source: Box<Iterator<Item = T> + 'a>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[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(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     source: Box<dyn Iterator<Item = T> + 'a>,
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:217:17
[INFO] [stdout]     |
[INFO] [stdout] 217 |     source: Box<Iterator<Item = T> + 'a>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 |     source: Box<dyn Iterator<Item = T> + 'a>,
[INFO] [stdout]     |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling curl-sys v0.2.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking flate2 v0.2.20
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "953e70572bdda2a8b098b317f3a8f9cecad97565f24657ce0fab90035c58801b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953e70572bdda2a8b098b317f3a8f9cecad97565f24657ce0fab90035c58801b", kill_on_drop: false }`
[INFO] [stdout] 953e70572bdda2a8b098b317f3a8f9cecad97565f24657ce0fab90035c58801b