[INFO] cloning repository https://github.com/ruscur/swagladder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ruscur/swagladder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruscur%2Fswagladder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruscur%2Fswagladder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcfc3f7a832337e805998e3d8911c3718b2d8b9e
[INFO] checking ruscur/swagladder against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruscur%2Fswagladder" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruscur/swagladder on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-50/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24ce4968035a7ba9e9f1165c6761b8c83142b11c965777f0e14d6999841b64d3
[INFO] running `Command { std: "docker" "start" "-a" "24ce4968035a7ba9e9f1165c6761b8c83142b11c965777f0e14d6999841b64d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24ce4968035a7ba9e9f1165c6761b8c83142b11c965777f0e14d6999841b64d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24ce4968035a7ba9e9f1165c6761b8c83142b11c965777f0e14d6999841b64d3", kill_on_drop: false }`
[INFO] [stdout] 24ce4968035a7ba9e9f1165c6761b8c83142b11c965777f0e14d6999841b64d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cc8e455f71b2598f4bc706764ee4328a440b92b03bbb551ecc3d7d746b602f8
[INFO] running `Command { std: "docker" "start" "-a" "6cc8e455f71b2598f4bc706764ee4328a440b92b03bbb551ecc3d7d746b602f8", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]    Compiling gcc v0.3.42
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]    Compiling redis v0.7.1
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking buf_redux v0.3.0
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking route-recognizer v0.1.11
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]    Compiling hyper v0.10.3
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking r2d2 v0.7.1
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num_cpus v1.2.1
[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 plugin v0.2.6
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling mime_guess v1.8.1
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking url v1.4.0
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[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]     Checking env_logger v0.4.0
[INFO] [stderr] error: could not compile `url` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.0.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.1.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.10.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.11.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.12.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.13.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.14.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.15.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.2.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.3.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.4.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.5.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.6.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.7.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.8.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.build_script_build.2311fa18-cgu.9.rcgu.o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b.21y8ryftq835bagi.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libmetadeps-7b90f9f0498e94dc.rlib" "/opt/rustwide/target/debug/deps/libtoml-63c1804025306598.rlib" "/opt/rustwide/target/debug/deps/libpkg_config-2cf77eeb1bdcd167.rlib" "/opt/rustwide/target/debug/deps/liberror_chain-f5f759f8e1ce95b5.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-c4556f2dfb9fe31e.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-8646748f5f581d8e.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-27e609617fffd9ba.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-54fc4b981caf04b1.rlib" "/opt/rustwide/target/debug/deps/libdbghelp-1b8c89a4415b9ce8.rlib" "/opt/rustwide/target/debug/deps/libwinapi-4d42a927084ddbff.rlib" "/opt/rustwide/target/debug/deps/libkernel32-1cb31e1f8a5753d0.rlib" "/opt/rustwide/target/debug/deps/liblibc-5d01d54f05972b67.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-29e5e596e889a0aa.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-1b145d9fcdc08832.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-5b037ee6b77e2ff0.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9635a64fca0ebd28.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-a7574eb9bb7a8fc5.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-f5fa1dc334dcaeeb.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-6ee570a898e75ef0.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-afb62f29a0815772.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-a632746535fd9988.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-25acc307bcb1d7b6.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-377721a625f6ace7.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-43c01431c8a4ee6f.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5f74725679453254.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-2b35d8999819161d.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-a81f2980c3f58cf2.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-57b4679830289815.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2a6a2797f7a73818.rlib" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-0e3656b1fda5fd7b.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-13b419dfbcf9c1f8.rlib" "-Wl,-Bdynamic" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/build/openssl-sys-ffbbdbecd3ea624b/build_script_build-ffbbdbecd3ea624b" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libbacktrace-c4556f2dfb9fe31e.rlib(backtrace-c4556f2dfb9fe31e.backtrace.4c235a8f-cgu.12.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-c4556f2dfb9fe31e.rlib(backtrace-c4556f2dfb9fe31e.backtrace.4c235a8f-cgu.12.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]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[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" "6cc8e455f71b2598f4bc706764ee4328a440b92b03bbb551ecc3d7d746b602f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc8e455f71b2598f4bc706764ee4328a440b92b03bbb551ecc3d7d746b602f8", kill_on_drop: false }`
[INFO] [stdout] 6cc8e455f71b2598f4bc706764ee4328a440b92b03bbb551ecc3d7d746b602f8