[INFO] cloning repository https://github.com/matt2xu/rustfest2016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matt2xu/rustfest2016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt2xu%2Frustfest2016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt2xu%2Frustfest2016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ec43273c9f805a59aa6e2cbb2ad4564b9b4cb94
[INFO] documenting matt2xu/rustfest2016 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt2xu%2Frustfest2016" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matt2xu/rustfest2016 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matt2xu/rustfest2016
[INFO] finished tweaking git repo https://github.com/matt2xu/rustfest2016
[INFO] tweaked toml for git repo https://github.com/matt2xu/rustfest2016 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/matt2xu/rustfest2016 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/bytes`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-proto`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-service`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miow v0.1.3
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded regex v0.1.76
[INFO] [stderr]   Downloaded regex-syntax v0.3.5
[INFO] [stderr]   Downloaded tokio-core v0.1.0
[INFO] [stderr]   Downloaded mio v0.6.0
[INFO] [stderr]   Downloaded futures v0.1.1
[INFO] [stderr]   Downloaded smallvec v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3610d2b9d82682d9dc3e917876643c4a7168acec13416561774f7b2d445d1f2
[INFO] running `Command { std: "docker" "start" "-a" "b3610d2b9d82682d9dc3e917876643c4a7168acec13416561774f7b2d445d1f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3610d2b9d82682d9dc3e917876643c4a7168acec13416561774f7b2d445d1f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3610d2b9d82682d9dc3e917876643c4a7168acec13416561774f7b2d445d1f2", kill_on_drop: false }`
[INFO] [stdout] b3610d2b9d82682d9dc3e917876643c4a7168acec13416561774f7b2d445d1f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a256796b5672cf70bc8f477d7c6f44b0493c27be732581cf0328e42d0388c7cb
[INFO] running `Command { std: "docker" "start" "-a" "a256796b5672cf70bc8f477d7c6f44b0493c27be732581cf0328e42d0388c7cb", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.3.5
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking smallvec v0.2.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking futures v0.1.1
[INFO] [stderr]     Checking bytes v0.4.0-dev (https://github.com/carllerche/bytes#f693e038)
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking tokio-service v0.1.0 (https://github.com/tokio-rs/tokio-service#4d56c91f)
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.76
[INFO] [stderr]     Checking env_logger v0.3.4
[INFO] [stderr]     Checking mio v0.6.0
[INFO] [stderr]     Checking tokio-core v0.1.0
[INFO] [stderr]     Checking tokio-proto v0.1.0 (https://github.com/tokio-rs/tokio-proto#63028a16)
[INFO] [stderr]  Documenting rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ident.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         try!(lines.next().unwrap());
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ident.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let file = try!(File::open(filename));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ident.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |             let line = try!(line);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ident.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(write!(f, "{}, {}: ", self.server, self.client));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ident.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 try!(write!(f, "USERID: {}", os));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ident.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     try!(write!(f, ", {}", charset));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.90s
[INFO] running `Command { std: "docker" "inspect" "a256796b5672cf70bc8f477d7c6f44b0493c27be732581cf0328e42d0388c7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a256796b5672cf70bc8f477d7c6f44b0493c27be732581cf0328e42d0388c7cb", kill_on_drop: false }`
[INFO] [stdout] a256796b5672cf70bc8f477d7c6f44b0493c27be732581cf0328e42d0388c7cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 164a480cff4ce19dbc73163b6fae8415a083a703fc8417b77dde3495e84e70ca
[INFO] running `Command { std: "docker" "start" "-a" "164a480cff4ce19dbc73163b6fae8415a083a703fc8417b77dde3495e84e70ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.3.5
[INFO] [stderr]     Checking smallvec v0.2.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking futures v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking bytes v0.4.0-dev (https://github.com/carllerche/bytes#f693e038)
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking tokio-service v0.1.0 (https://github.com/tokio-rs/tokio-service#4d56c91f)
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.76
[INFO] [stderr]     Checking env_logger v0.3.4
[INFO] [stderr]     Checking mio v0.6.0
[INFO] [stderr]     Checking tokio-core v0.1.0
[INFO] [stderr]     Checking tokio-proto v0.1.0 (https://github.com/tokio-rs/tokio-proto#63028a16)
[INFO] [stderr]  Documenting rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "164a480cff4ce19dbc73163b6fae8415a083a703fc8417b77dde3495e84e70ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164a480cff4ce19dbc73163b6fae8415a083a703fc8417b77dde3495e84e70ca", kill_on_drop: false }`
[INFO] [stdout] 164a480cff4ce19dbc73163b6fae8415a083a703fc8417b77dde3495e84e70ca