[INFO] cloning repository https://github.com/tomcraven/coin-info
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomcraven/coin-info" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomcraven%2Fcoin-info", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomcraven%2Fcoin-info'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20f4d5a437a20e9e48fe21fea45f7a47db86237a
[INFO] documenting tomcraven/coin-info against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomcraven%2Fcoin-info" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomcraven/coin-info on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomcraven/coin-info
[INFO] finished tweaking git repo https://github.com/tomcraven/coin-info
[INFO] tweaked toml for git repo https://github.com/tomcraven/coin-info written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/tomcraven/coin-info already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b01d03ea02d82972b6d26e395fadbaad77712d95de1fa376bc0fafd58105f71f
[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" "b01d03ea02d82972b6d26e395fadbaad77712d95de1fa376bc0fafd58105f71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b01d03ea02d82972b6d26e395fadbaad77712d95de1fa376bc0fafd58105f71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b01d03ea02d82972b6d26e395fadbaad77712d95de1fa376bc0fafd58105f71f", kill_on_drop: false }`
[INFO] [stdout] b01d03ea02d82972b6d26e395fadbaad77712d95de1fa376bc0fafd58105f71f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8326211fa7fee068b487d3325343c73de3cc90c6e75ff3d46c71153b64fc0d94
[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" "8326211fa7fee068b487d3325343c73de3cc90c6e75ff3d46c71153b64fc0d94", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking futures v0.1.17
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]    Compiling openssl v0.9.23
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]    Compiling build_const v0.2.0
[INFO] [stderr]     Checking siphasher v0.2.2
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking serde v1.0.25
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking httparse v1.2.3
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking cassowary v0.2.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling crc v1.6.0
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking iovec v0.1.1
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking termion v1.5.1 (https://github.com/ticki/termion#b3e0bbdf)
[INFO] [stderr]     Checking bytes v0.4.5
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]     Checking mio v0.6.11
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.7
[INFO] [stderr]     Checking relay v0.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]     Checking libflate v0.1.12
[INFO] [stderr]     Checking tokio-io v0.1.4
[INFO] [stderr]     Checking tui v0.1.3 (https://github.com/fdehau/tui-rs#e675d673)
[INFO] [stderr]     Checking mime v0.3.5
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.3
[INFO] [stderr]    Compiling serde_derive_internals v0.18.1
[INFO] [stderr]    Compiling openssl-sys v0.9.23
[INFO] [stderr]     Checking url v1.6.0
[INFO] [stderr]     Checking tokio-core v0.1.11
[INFO] [stderr]    Compiling structopt-derive v0.1.6
[INFO] [stderr] error: failed to run custom build command for `mime_guess v2.0.0-alpha.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mime_guess-0e5e713f4c780878/build-script-gen_mime_types` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-2.0.0-alpha.3/src/gen_mime_types.rs:22:67
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55afb4f33ee5 - backtrace::backtrace::libunwind::trace::h14d338b30b3ea0a7
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x55afb4f33ee5 - backtrace::backtrace::trace_unsynchronized::h73ea91d74a3fd67f
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55afb4f33ee5 - std::sys_common::backtrace::_print_fmt::hd42948c952866e12
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x55afb4f33ee5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha8f928866ff7571e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x55afb4f5185c - core::fmt::write::he0c1e5f7426d2718
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x55afb4f325a2 - std::io::Write::write_fmt::hf3afc6cfd57d0033
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x55afb4f36320 - std::sys_common::backtrace::_print::hfc0110703f3696fd
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x55afb4f36320 - std::sys_common::backtrace::print::h3f77c6990ddfaa22
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x55afb4f36320 - std::panicking::default_hook::{{closure}}::heae49580a8d62d75
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x55afb4f3606c - std::panicking::default_hook::hecc34e3f729e213c
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x55afb4f36963 - std::panicking::rust_panic_with_hook::he82f5d0644692441
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x55afb4f3655b - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x55afb4f50c61 - core::panicking::panic_fmt::h09c929f06bb87c98
[INFO] [stderr]                                  at src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x55afb4f50a83 - core::option::expect_none_failed::h188f17af6c9f404b
[INFO] [stderr]                                  at src/libcore/option.rs:1269
[INFO] [stderr]     14:     0x55afb4f1894b - core::result::Result<T,E>::unwrap::h8b3aebc16f913d7a
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/result.rs:1005
[INFO] [stderr]     15:     0x55afb4eff30f - build_script_gen_mime_types::main::h023dacfcbf16b556
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-2.0.0-alpha.3/src/gen_mime_types.rs:22
[INFO] [stderr]     16:     0x55afb4efb5bb - std::rt::lang_start::{{closure}}::hd1ad5e65f09a14a6
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     17:     0x55afb4f36d33 - std::rt::lang_start_internal::{{closure}}::h5d3ea623498f5f43
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     18:     0x55afb4f36d33 - std::panicking::try::do_call::hac65e71be769a440
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     19:     0x55afb4f36d33 - std::panicking::try::hd4706e264bcf6712
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     20:     0x55afb4f36d33 - std::panic::catch_unwind::h948a0fb4a8b3ee82
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     21:     0x55afb4f36d33 - std::rt::lang_start_internal::h72cc068ed2d0ac53
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     22:     0x55afb4efb597 - std::rt::lang_start::h682cf3f9d6b4e03d
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     23:     0x55afb4f0083a - main
[INFO] [stderr]     24:     0x7f9e9388c0b3 - __libc_start_main
[INFO] [stderr]     25:     0x55afb4ee917e - _start
[INFO] [stderr]     26:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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-1.6.0/src/form_urlencoded.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 261 |     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: build failed
[INFO] running `Command { std: "docker" "inspect" "8326211fa7fee068b487d3325343c73de3cc90c6e75ff3d46c71153b64fc0d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8326211fa7fee068b487d3325343c73de3cc90c6e75ff3d46c71153b64fc0d94", kill_on_drop: false }`
[INFO] [stdout] 8326211fa7fee068b487d3325343c73de3cc90c6e75ff3d46c71153b64fc0d94