[INFO] cloning repository https://github.com/brson/coingrab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brson/coingrab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fcoingrab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fcoingrab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eda42ac5f3acb155a33c92f2594ed83cd9e9384
[INFO] documenting brson/coingrab against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fcoingrab" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brson/coingrab on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brson/coingrab
[INFO] finished tweaking git repo https://github.com/brson/coingrab
[INFO] tweaked toml for git repo https://github.com/brson/coingrab written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/brson/coingrab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded debug_unreachable v0.1.1
[INFO] [stderr]   Downloaded tendril v0.2.4
[INFO] [stderr]   Downloaded hyper-native-tls v0.2.4
[INFO] [stderr]   Downloaded foreign-types v0.2.0
[INFO] [stderr]   Downloaded gdi32-sys v0.2.0
[INFO] [stderr]   Downloaded advapi32-sys v0.2.0
[INFO] [stderr]   Downloaded security-framework-sys v0.1.14
[INFO] [stderr]   Downloaded antidote v1.0.0
[INFO] [stderr]   Downloaded backtrace v0.3.2
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded thread_local v0.3.3
[INFO] [stderr]   Downloaded aho-corasick v0.6.3
[INFO] [stderr]   Downloaded thread-id v3.1.0
[INFO] [stderr]   Downloaded bit-vec v0.4.4
[INFO] [stderr]   Downloaded pkg-config v0.3.9
[INFO] [stderr]   Downloaded backtrace-sys v0.1.11
[INFO] [stderr]   Downloaded user32-sys v0.2.0
[INFO] [stderr]   Downloaded security-framework v0.1.14
[INFO] [stderr]   Downloaded utf-8 v0.6.0
[INFO] [stderr]   Downloaded html5ever-atoms v0.2.2
[INFO] [stderr]   Downloaded string_cache v0.4.0
[INFO] [stderr]   Downloaded cfg-if v0.1.1
[INFO] [stderr]   Downloaded secur32-sys v0.2.0
[INFO] [stderr]   Downloaded serde_urlencoded v0.5.1
[INFO] [stderr]   Downloaded string_cache_codegen v0.3.1
[INFO] [stderr]   Downloaded serde v0.9.15
[INFO] [stderr]   Downloaded futf v0.1.3
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.13
[INFO] [stderr]   Downloaded fs2 v0.4.1
[INFO] [stderr]   Downloaded libflate v0.1.7
[INFO] [stderr]   Downloaded openssl v0.9.13
[INFO] [stderr]   Downloaded crypt32-sys v0.2.0
[INFO] [stderr]   Downloaded schannel v0.1.5
[INFO] [stderr]   Downloaded native-tls v0.1.2
[INFO] [stderr]   Downloaded reqwest v0.6.2
[INFO] [stderr]   Downloaded bit-set v0.4.0
[INFO] [stderr]   Downloaded toml v0.4.1
[INFO] [stderr]   Downloaded select v0.4.0
[INFO] [stderr]   Downloaded html5ever v0.14.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6189fc7a7ebaaea55264c5350ff34e9234f7618482afbfbea865c06790891485
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6189fc7a7ebaaea55264c5350ff34e9234f7618482afbfbea865c06790891485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6189fc7a7ebaaea55264c5350ff34e9234f7618482afbfbea865c06790891485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6189fc7a7ebaaea55264c5350ff34e9234f7618482afbfbea865c06790891485", kill_on_drop: false }`
[INFO] [stdout] 6189fc7a7ebaaea55264c5350ff34e9234f7618482afbfbea865c06790891485
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2e587d40306b1a7d4476d56751a1fe9a8ff04324a7bdad32212b6d011eedb47
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c2e587d40306b1a7d4476d56751a1fe9a8ff04324a7bdad32212b6d011eedb47", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.23
[INFO] [stderr]    Compiling gcc v0.3.50
[INFO] [stderr]    Compiling openssl v0.9.13
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking cfg-if v0.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]     Checking utf-8 v0.6.0
[INFO] [stderr]     Checking libflate v0.1.7
[INFO] [stderr]     Checking idna v0.1.2
[INFO] [stderr]     Checking futf v0.1.3
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking tendril v0.2.4
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.1.0
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking fs2 v0.4.1
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]    Compiling openssl-sys v0.9.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]     Checking url v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking fancy_flocks v0.1.0 (/opt/rustwide/workdir/fancy_flocks)
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling string_cache_codegen v0.3.1
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> fancy_flocks/src/dirty_flock.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut file = file.deref_mut().as_mut().expect("locked file");
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> fancy_flocks/src/dirty_flock.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let mut file = file_.deref_mut().as_mut().expect("locked file");
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling html5ever v0.14.1
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.1/src/form_urlencoded.rs:248:40
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 247 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 248 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stdout]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `url` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c2e587d40306b1a7d4476d56751a1fe9a8ff04324a7bdad32212b6d011eedb47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2e587d40306b1a7d4476d56751a1fe9a8ff04324a7bdad32212b6d011eedb47", kill_on_drop: false }`
[INFO] [stdout] c2e587d40306b1a7d4476d56751a1fe9a8ff04324a7bdad32212b6d011eedb47
