[INFO] updating cached repository https://github.com/ruscur/swagladder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcfc3f7a832337e805998e3d8911c3718b2d8b9e
[INFO] documenting ruscur/swagladder against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruscur%2Fswagladder" "/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/ruscur/swagladder on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ruscur/swagladder
[INFO] finished tweaking git repo https://github.com/ruscur/swagladder
[INFO] tweaked toml for git repo https://github.com/ruscur/swagladder written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ruscur/swagladder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1261c6b67a2282fe19b6e715e4afc4356f4ba549b0cecd79ef2cacc9ec1689d9
[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" "1261c6b67a2282fe19b6e715e4afc4356f4ba549b0cecd79ef2cacc9ec1689d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1261c6b67a2282fe19b6e715e4afc4356f4ba549b0cecd79ef2cacc9ec1689d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1261c6b67a2282fe19b6e715e4afc4356f4ba549b0cecd79ef2cacc9ec1689d9", kill_on_drop: false }`
[INFO] [stdout] 1261c6b67a2282fe19b6e715e4afc4356f4ba549b0cecd79ef2cacc9ec1689d9
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 130f687ef550b757059ddbe21ed1091bc5a39a92df87433a23296a875208d0c6
[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" "130f687ef550b757059ddbe21ed1091bc5a39a92df87433a23296a875208d0c6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]    Compiling redis v0.7.1
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking buf_redux v0.3.0
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking r2d2 v0.7.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]    Compiling hyper v0.10.3
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking url v1.4.0
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[INFO] [stderr]    Compiling mime_guess v1.8.1
[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-1.4.0/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" "-L" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.0.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.1.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.10.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.11.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.12.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.13.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.14.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.15.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.2.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.3.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.4.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.5.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.6.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.7.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.8.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.build_script_build.bpxllwwa-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd" "/opt/rustwide/target/debug/build/openssl-sys-2504dc2a12705ffd/build_script_build-2504dc2a12705ffd.pjbg2mn65nnaes9.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libmetadeps-18510c441c7bb880.rlib" "/opt/rustwide/target/debug/deps/libtoml-3cfb15c56db1ae05.rlib" "/opt/rustwide/target/debug/deps/libpkg_config-638aeddae1cb6a9b.rlib" "/opt/rustwide/target/debug/deps/liberror_chain-65f6f18dbee8f52d.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-319470178411bd52.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-795a16244bb5a153.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-6f7613caa4e7adb2.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-511e5a483a778330.rlib" "/opt/rustwide/target/debug/deps/libdbghelp-577a61f2966e38a3.rlib" "/opt/rustwide/target/debug/deps/libwinapi-087951169237d48f.rlib" "/opt/rustwide/target/debug/deps/libkernel32-5d8c51e7feda5746.rlib" "/opt/rustwide/target/debug/deps/liblibc-e4ed67410adee50c.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b6aff3703feff874.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-812457dcc335cb0e.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3b70323dc13665e.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-a72ca64738319f23.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-ae466ecb818a21c7.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8965f725fa371d94.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-f5d385bbcf1c0598.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-14d182d411047066.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-45730ad7fe9247a8.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-077a7bdb239ba92c.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/66dfc4e010913fbed0c4ea91fc2c010004b0f441/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-31151f98ccdb185a.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-319470178411bd52.rlib(backtrace-319470178411bd52.backtrace.ahr3bad2-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-319470178411bd52.rlib(backtrace-319470178411bd52.backtrace.ahr3bad2-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" "130f687ef550b757059ddbe21ed1091bc5a39a92df87433a23296a875208d0c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "130f687ef550b757059ddbe21ed1091bc5a39a92df87433a23296a875208d0c6", kill_on_drop: false }`
[INFO] [stdout] 130f687ef550b757059ddbe21ed1091bc5a39a92df87433a23296a875208d0c6