[INFO] fetching crate tarpaulin 0.1.0...
[INFO] documenting tarpaulin-0.1.0 against nightly for scrape-examples
[INFO] extracting crate tarpaulin 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tarpaulin 0.1.0 on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tarpaulin 0.1.0
[INFO] finished tweaking crates.io crate tarpaulin 0.1.0
[INFO] tweaked toml for crates.io crate tarpaulin 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bincode v0.8.0
[INFO] [stderr]   Downloaded tarpc-plugins v0.2.0
[INFO] [stderr]   Downloaded tarpc v0.9.0
[INFO] [stderr]   Downloaded thread-pool v0.1.1
[INFO] [stderr]   Downloaded two-lock-queue v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4414bad21a405a42d72f46ed4a789aed3954ea0bf444a06c55e6bfee51560aba
[INFO] running `Command { std: "docker" "start" "-a" "4414bad21a405a42d72f46ed4a789aed3954ea0bf444a06c55e6bfee51560aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4414bad21a405a42d72f46ed4a789aed3954ea0bf444a06c55e6bfee51560aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4414bad21a405a42d72f46ed4a789aed3954ea0bf444a06c55e6bfee51560aba", kill_on_drop: false }`
[INFO] [stdout] 4414bad21a405a42d72f46ed4a789aed3954ea0bf444a06c55e6bfee51560aba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2484a465c9df6eba9c51d1339fa02bdbf302f2635d4ab538aba263d7dae3a81
[INFO] running `Command { std: "docker" "start" "-a" "c2484a465c9df6eba9c51d1339fa02bdbf302f2635d4ab538aba263d7dae3a81", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.150
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]     Checking two-lock-queue v0.1.1
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling tarpc-plugins v0.2.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tarpc-plugins-0.2.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, rustc_private)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: a __rustc_plugin_registrar symbol must now be defined instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tarpc-plugins-0.2.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tarpc-plugins-0.2.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tarpc-plugins-0.2.0/src/lib.rs:192:3
[INFO] [stdout]     |
[INFO] [stdout] 192 | #[plugin_registrar]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tarpc-plugins` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c2484a465c9df6eba9c51d1339fa02bdbf302f2635d4ab538aba263d7dae3a81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2484a465c9df6eba9c51d1339fa02bdbf302f2635d4ab538aba263d7dae3a81", kill_on_drop: false }`
[INFO] [stdout] c2484a465c9df6eba9c51d1339fa02bdbf302f2635d4ab538aba263d7dae3a81