[INFO] fetching crate shared-data 0.0.2...
[INFO] documenting shared-data-0.0.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate shared-data 0.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate shared-data 0.0.2 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shared-data 0.0.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate shared-data 0.0.2
[INFO] tweaked toml for crates.io crate shared-data 0.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate shared-data 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shared_memory v0.8.2
[INFO] [stderr]   Downloaded ipc-channel v0.12.2
[INFO] [stderr]   Downloaded theban_interval_tree v0.7.1
[INFO] [stderr]   Downloaded memrange v0.1.3
[INFO] [stderr]   Downloaded no-panic v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edb1acc075422e0a3335dde47434850b67399a0b4445734bec29e4b4bccda3a6
[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" "edb1acc075422e0a3335dde47434850b67399a0b4445734bec29e4b4bccda3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edb1acc075422e0a3335dde47434850b67399a0b4445734bec29e4b4bccda3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edb1acc075422e0a3335dde47434850b67399a0b4445734bec29e4b4bccda3a6", kill_on_drop: false }`
[INFO] [stdout] edb1acc075422e0a3335dde47434850b67399a0b4445734bec29e4b4bccda3a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40c6d3d608966c829ca8464a56eded120ebfa4c0032a5ef60688bf9e22599fdf
[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" "40c6d3d608966c829ca8464a56eded120ebfa4c0032a5ef60688bf9e22599fdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking array-macro v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking memrange v0.1.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking theban_interval_tree v0.7.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking shared_memory v0.8.2
[INFO] [stderr]     Checking shared-data v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting shared-data v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/shared_rc.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 | /             mem::replace(
[INFO] [stdout] 92 | |                 &mut self.0,
[INFO] [stdout] 93 | |                 ManuallyDrop::new(SharedBox::unchecked_from_address(SharedAddressRange::null())),
[INFO] [stdout] 94 | |             );
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.92s
[INFO] running `Command { std: "docker" "inspect" "40c6d3d608966c829ca8464a56eded120ebfa4c0032a5ef60688bf9e22599fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c6d3d608966c829ca8464a56eded120ebfa4c0032a5ef60688bf9e22599fdf", kill_on_drop: false }`
[INFO] [stdout] 40c6d3d608966c829ca8464a56eded120ebfa4c0032a5ef60688bf9e22599fdf