[INFO] cloning repository https://github.com/mattcl/are-we-merged-yet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattcl/are-we-merged-yet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38880f502873c7c07b7feaff9b04e16aa51be2dd
[INFO] documenting mattcl/are-we-merged-yet against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattcl/are-we-merged-yet on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattcl/are-we-merged-yet
[INFO] finished tweaking git repo https://github.com/mattcl/are-we-merged-yet
[INFO] tweaked toml for git repo https://github.com/mattcl/are-we-merged-yet written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mattcl/are-we-merged-yet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92481c6df32c94ab98636ad2031ca5b18100b8f6bec85902f3258211e0b078b9
[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" "92481c6df32c94ab98636ad2031ca5b18100b8f6bec85902f3258211e0b078b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92481c6df32c94ab98636ad2031ca5b18100b8f6bec85902f3258211e0b078b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92481c6df32c94ab98636ad2031ca5b18100b8f6bec85902f3258211e0b078b9", kill_on_drop: false }`
[INFO] [stdout] 92481c6df32c94ab98636ad2031ca5b18100b8f6bec85902f3258211e0b078b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5161b56979abcd87517a60def29ed21f37d5a36b00594b41fe017f386a71bda2
[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" "5161b56979abcd87517a60def29ed21f37d5a36b00594b41fe017f386a71bda2", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking unicode-segmentation v1.0.1
[INFO] [stderr]     Checking openssl-probe v0.1.0
[INFO] [stderr]     Checking encode_unicode v0.2.0
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking term v0.4.4
[INFO] [stderr]     Checking atty v0.2.1
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]    Compiling cmake v0.1.20
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling libz-sys v1.0.10
[INFO] [stderr]    Compiling curl-sys v0.3.6
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.5
[INFO] [stderr]    Compiling libgit2-sys v0.6.6
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]     Checking url v1.2.4
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[INFO] [stderr]     Checking csv v0.14.7
[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-1.2.4/src/form_urlencoded.rs:246:40
[INFO] [stdout]     |
[INFO] [stdout] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 246 |     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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.0.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.1.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.10.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.11.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.12.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.13.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.14.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.15.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.2.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.3.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.4.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.5.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.6.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.7.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.8.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.build_script_build.44zxpyew-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af" "/opt/rustwide/target/debug/build/openssl-sys-df1d81bfa1dd63af/build_script_build-df1d81bfa1dd63af.4xbulbuwnk0bq3sy.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libmetadeps-d706a5597def9c37.rlib" "/opt/rustwide/target/debug/deps/libtoml-98e7d26a4c38ba35.rlib" "/opt/rustwide/target/debug/deps/libpkg_config-44f7ec02a6c944ca.rlib" "/opt/rustwide/target/debug/deps/liberror_chain-7ec296ff75d9cba5.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-5176d9551608d9f8.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-605d059251a3fa94.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-1f54c49f5be732f2.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-d6fcb4c35c06a007.rlib" "/opt/rustwide/target/debug/deps/libdbghelp-720313caad178130.rlib" "/opt/rustwide/target/debug/deps/libwinapi-2b3c8de3012066b8.rlib" "/opt/rustwide/target/debug/deps/libkernel32-7b1b1e9c00963030.rlib" "/opt/rustwide/target/debug/deps/liblibc-19f84d5612491181.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-f14aca24435a5414.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-48d342a8b48d1d01.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-14bc0820888c8eb3.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbd9e217bff06bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-31826136df98934e.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-075976a117c8fd5d.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2d5cbedfbf17a011.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0474372ff08c5319.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d437c34460d2315a.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-fb61ed1b8cc4de79.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bf76d1b643bfc9f0.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1b53aa7fddcf418.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-28585e57fac45c73.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64801769bc15ab28.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-541997b56bb98660.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cdea3c81adab3d12.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-cd9f15a39fb65cbc.rlib" "-Wl,-Bdynamic" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libbacktrace-5176d9551608d9f8.rlib(backtrace-5176d9551608d9f8.backtrace.9fh42ali-cgu.13.rcgu.o): in function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:156: undefined reference to `backtrace_create_state'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libbacktrace-5176d9551608d9f8.rlib(backtrace-5176d9551608d9f8.backtrace.9fh42ali-cgu.13.rcgu.o): in function `backtrace::symbolize::libbacktrace::resolve':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:173: undefined reference to `backtrace_pcinfo'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:177: undefined reference to `backtrace_syminfo'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5161b56979abcd87517a60def29ed21f37d5a36b00594b41fe017f386a71bda2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5161b56979abcd87517a60def29ed21f37d5a36b00594b41fe017f386a71bda2", kill_on_drop: false }`
[INFO] [stdout] 5161b56979abcd87517a60def29ed21f37d5a36b00594b41fe017f386a71bda2
