[INFO] fetching crate docket 0.7.1...
[INFO] checking docket-0.7.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate docket 0.7.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate docket 0.7.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate docket 0.7.1
[INFO] finished tweaking crates.io crate docket 0.7.1
[INFO] tweaked toml for crates.io crate docket 0.7.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate docket 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded onig v6.3.2
[INFO] [stderr]   Downloaded serde_derive v1.0.139
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.1
[INFO] [stderr]   Downloaded serde v1.0.139
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded time v0.3.11
[INFO] [stderr]   Downloaded plist v1.3.1
[INFO] [stderr]   Downloaded onig_sys v69.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46abfd843ac2593df937de91360d78359f3efd81040173a8e4a8a29ad358d327
[INFO] running `Command { std: "docker" "start" "-a" "46abfd843ac2593df937de91360d78359f3efd81040173a8e4a8a29ad358d327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46abfd843ac2593df937de91360d78359f3efd81040173a8e4a8a29ad358d327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46abfd843ac2593df937de91360d78359f3efd81040173a8e4a8a29ad358d327", kill_on_drop: false }`
[INFO] [stdout] 46abfd843ac2593df937de91360d78359f3efd81040173a8e4a8a29ad358d327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad27f6d84b10be558e8b53175730cffe59d63ef6caaf591c9f0e9f4620a3d66f
[INFO] running `Command { std: "docker" "start" "-a" "ad27f6d84b10be558e8b53175730cffe59d63ef6caaf591c9f0e9f4620a3d66f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling onig_sys v69.8.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking time v0.3.11
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking filetime v0.2.17
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking onig v6.3.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking syntect v5.0.0
[INFO] [stderr]     Checking docket v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `syntect` is imported redundantly
[INFO] [stdout]   --> src/highlight.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         self, highlighting::ThemeSet, html::highlighted_html_for_string, parsing::SyntaxSet,
[INFO] [stdout]    |         ^^^^ the item `syntect` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PathBuf` is imported redundantly
[INFO] [stdout]    --> src/doctree.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     use super::*;
[INFO] [stdout]     |         -------- the item `PathBuf` is already imported here
[INFO] [stdout] 317 |     use std::path::PathBuf;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syntect` is imported redundantly
[INFO] [stdout]   --> src/highlight.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         self, highlighting::ThemeSet, html::highlighted_html_for_string, parsing::SyntaxSet,
[INFO] [stdout]    |         ^^^^ the item `syntect` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_header` is never used
[INFO] [stdout]   --> src/highlight.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) trait Highlighter {
[INFO] [stdout]    |                  ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn write_header(&self, out: &mut dyn Write) -> std::io::Result<()>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_header` is never used
[INFO] [stdout]   --> src/highlight.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) trait Highlighter {
[INFO] [stdout]    |                  ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn write_header(&self, out: &mut dyn Write) -> std::io::Result<()>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.72s
[INFO] running `Command { std: "docker" "inspect" "ad27f6d84b10be558e8b53175730cffe59d63ef6caaf591c9f0e9f4620a3d66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad27f6d84b10be558e8b53175730cffe59d63ef6caaf591c9f0e9f4620a3d66f", kill_on_drop: false }`
[INFO] [stdout] ad27f6d84b10be558e8b53175730cffe59d63ef6caaf591c9f0e9f4620a3d66f