[INFO] updating cached repository https://github.com/mre/lqip
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] be0cffd5b5f211edd7d5898f014e46e8e1c4bac4
[INFO] checking mre/lqip against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmre%2Flqip" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mre/lqip on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mre/lqip
[INFO] finished tweaking git repo https://github.com/mre/lqip
[INFO] tweaked toml for git repo https://github.com/mre/lqip written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mre/lqip already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0d588d5e4da05eeae139eeb0a4d71ed5c9c6eea767113b717fbc281ffd31b5f6
[INFO] running `"docker" "start" "-a" "0d588d5e4da05eeae139eeb0a4d71ed5c9c6eea767113b717fbc281ffd31b5f6"`
[INFO] [stderr]    Compiling libc v0.2.35
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking unidecode v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking futf v0.1.3
[INFO] [stderr]     Checking tendril v0.3.1
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking shared_child v0.3.2
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking rand v0.3.19
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking slug v0.1.2
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking url v1.6.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling string_cache_codegen v0.4.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.6.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]    Compiling markup5ever v0.3.2
[INFO] [stderr]     Checking os_pipe v0.6.0
[INFO] [stderr]     Checking duct v0.9.2
[INFO] [stderr]    Compiling html5ever v0.18.0
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking select v0.4.2
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking tera v0.10.10
[INFO] [stderr]     Checking lqip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | / lazy_static! {
[INFO] [stderr] 35 | |     pub static ref TERA: Tera = {
[INFO] [stderr] 36 | |         let mut tera = Tera::default();
[INFO] [stderr] 37 | |         tera.add_raw_template("image.html", r#"<div class="loader">
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     };
[INFO] [stderr] 44 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | / lazy_static! {
[INFO] [stderr] 35 | |     pub static ref TERA: Tera = {
[INFO] [stderr] 36 | |         let mut tera = Tera::default();
[INFO] [stderr] 37 | |         tera.add_raw_template("image.html", r#"<div class="loader">
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     };
[INFO] [stderr] 44 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | / error_chain! {
[INFO] [stderr] 28 | |     foreign_links {
[INFO] [stderr] 29 | |         Io(std::io::Error);
[INFO] [stderr] 30 | |         Tera(tera::Error);
[INFO] [stderr] 31 | |     }
[INFO] [stderr] 32 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | / error_chain! {
[INFO] [stderr] 28 | |     foreign_links {
[INFO] [stderr] 29 | |         Io(std::io::Error);
[INFO] [stderr] 30 | |         Tera(tera::Error);
[INFO] [stderr] 31 | |     }
[INFO] [stderr] 32 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.37s
[INFO] running `"docker" "inspect" "0d588d5e4da05eeae139eeb0a4d71ed5c9c6eea767113b717fbc281ffd31b5f6"`
[INFO] running `"docker" "rm" "-f" "0d588d5e4da05eeae139eeb0a4d71ed5c9c6eea767113b717fbc281ffd31b5f6"`
[INFO] [stdout] 0d588d5e4da05eeae139eeb0a4d71ed5c9c6eea767113b717fbc281ffd31b5f6