[INFO] cloning repository https://github.com/ruckc/mcr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ruckc/mcr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruckc%2Fmcr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruckc%2Fmcr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc0734752846b14b3828d56403c693cc03db35da
[INFO] documenting ruckc/mcr 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%2Fruckc%2Fmcr" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruckc/mcr 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/ruckc/mcr
[INFO] finished tweaking git repo https://github.com/ruckc/mcr
[INFO] tweaked toml for git repo https://github.com/ruckc/mcr written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ruckc/mcr 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 25b5aa222c63ddec1c930ea37fac11cb250a8c2a48b82cd4917ec4080ba7f4d0
[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" "25b5aa222c63ddec1c930ea37fac11cb250a8c2a48b82cd4917ec4080ba7f4d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25b5aa222c63ddec1c930ea37fac11cb250a8c2a48b82cd4917ec4080ba7f4d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b5aa222c63ddec1c930ea37fac11cb250a8c2a48b82cd4917ec4080ba7f4d0", kill_on_drop: false }`
[INFO] [stdout] 25b5aa222c63ddec1c930ea37fac11cb250a8c2a48b82cd4917ec4080ba7f4d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] cbaa0364a14e592ec0cacf6355618e2cf834fc92bde1c6806e90f2cdddd372f5
[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" "cbaa0364a14e592ec0cacf6355618e2cf834fc92bde1c6806e90f2cdddd372f5", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking odds v0.2.26
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking arrayvec v0.3.25
[INFO] [stderr]     Checking syslog v4.0.1
[INFO] [stderr]     Checking hexdump v0.1.0
[INFO] [stderr]     Checking clokwerk v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]  Documenting mcr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]   --> src/config.rs:18:80
[INFO] [stdout]    |
[INFO] [stdout] 18 |         .about("Sets up multicast routing for pure IGMP (Layer 2) management.")
[INFO] [stdout]    |                                                                                ^ help: add `;` here
[INFO] [stdout] ...
[INFO] [stdout] 21 |     let config_ini = ini::Ini::load_from_file(configfile.expect("No configuration file specified")).unwrap()    ;
[INFO] [stdout]    |     --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `mcr`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name mcr src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-245da0a8263db4c4.rmeta --extern clokwerk=/opt/rustwide/target/debug/deps/libclokwerk-22f45a66877619ae.rmeta --extern errno=/opt/rustwide/target/debug/deps/liberrno-ca97eb3dc2d48845.rmeta --extern hexdump=/opt/rustwide/target/debug/deps/libhexdump-e4aec3e1468ce019.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-13bf4e33c96eb643.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-73430f19bfb49216.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-832ca47487ef17b7.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-ac2c380fe7a7ff9a.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-c4278c19338dbfd2.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-33c4bc2c0e31418c.rmeta --extern ini=/opt/rustwide/target/debug/deps/libini-020a22499fb1a435.rmeta --extern syslog=/opt/rustwide/target/debug/deps/libsyslog-6e39f528cd060e3f.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-a0d7af5857aa8cfb.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "cbaa0364a14e592ec0cacf6355618e2cf834fc92bde1c6806e90f2cdddd372f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbaa0364a14e592ec0cacf6355618e2cf834fc92bde1c6806e90f2cdddd372f5", kill_on_drop: false }`
[INFO] [stdout] cbaa0364a14e592ec0cacf6355618e2cf834fc92bde1c6806e90f2cdddd372f5