[INFO] cloning repository https://github.com/guangie88/unwalk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guangie88/unwalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguangie88%2Funwalk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguangie88%2Funwalk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9be570627bcd5c50e4d3eb7632c6e6027895bb31
[INFO] documenting guangie88/unwalk against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguangie88%2Funwalk" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guangie88/unwalk on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guangie88/unwalk
[INFO] finished tweaking git repo https://github.com/guangie88/unwalk
[INFO] tweaked toml for git repo https://github.com/guangie88/unwalk written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/guangie88/unwalk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded same-file v1.0.2
[INFO] [stderr]   Downloaded failure_derive v0.1.1
[INFO] [stderr]   Downloaded tempfile v3.0.0
[INFO] [stderr]   Downloaded structopt v0.2.6
[INFO] [stderr]   Downloaded proc-macro2 v0.3.5
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.0
[INFO] [stderr]   Downloaded cc v1.0.9
[INFO] [stderr]   Downloaded atty v0.2.8
[INFO] [stderr]   Downloaded serde v1.0.37
[INFO] [stderr]   Downloaded miniz-sys v0.1.10
[INFO] [stderr]   Downloaded rustc-demangle v0.1.7
[INFO] [stderr]   Downloaded backtrace v0.3.5
[INFO] [stderr]   Downloaded walkdir v2.1.4
[INFO] [stderr]   Downloaded toml v0.4.5
[INFO] [stderr]   Downloaded failure v0.1.1
[INFO] [stderr]   Downloaded flate2 v1.0.1
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded serde_derive v1.0.37
[INFO] [stderr]   Downloaded structopt-derive v0.2.6
[INFO] [stderr]   Downloaded backtrace-sys v0.1.16
[INFO] [stderr]   Downloaded remove_dir_all v0.5.0
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded filebuffer v0.3.0
[INFO] [stderr]   Downloaded file v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8b8ca8dd4cdb26352e953252dab30ba07ece4bc683223f6397d968e9c2b0060
[INFO] running `Command { std: "docker" "start" "-a" "d8b8ca8dd4cdb26352e953252dab30ba07ece4bc683223f6397d968e9c2b0060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8b8ca8dd4cdb26352e953252dab30ba07ece4bc683223f6397d968e9c2b0060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b8ca8dd4cdb26352e953252dab30ba07ece4bc683223f6397d968e9c2b0060", kill_on_drop: false }`
[INFO] [stdout] d8b8ca8dd4cdb26352e953252dab30ba07ece4bc683223f6397d968e9c2b0060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3cd1d28e4c4ddaf061a71c7497f2d835ebacf060478ce982c6a010a3fe90c15
[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" "e3cd1d28e4c4ddaf061a71c7497f2d835ebacf060478ce982c6a010a3fe90c15", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]     Checking file v1.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking filebuffer v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]     Checking unwalk-base v0.2.0-beta1 (/opt/rustwide/workdir/base)
[INFO] [stderr]     Checking structopt v0.2.6
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> base/src/error.rs:46:16
[INFO] [stdout]    |
[INFO] [stdout] 46 |     error: Box<std::error::Error + Sync + Send>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error + Sync + Send`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> base/src/lib.rs:2:54
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(missing_debug_implementations, missing_docs, warnings)]
[INFO] [stdout]    |                                                      ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> base/src/error.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |         E: Into<Box<std::error::Error + Sync + Send>>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error + Sync + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unwalk-base` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e3cd1d28e4c4ddaf061a71c7497f2d835ebacf060478ce982c6a010a3fe90c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3cd1d28e4c4ddaf061a71c7497f2d835ebacf060478ce982c6a010a3fe90c15", kill_on_drop: false }`
[INFO] [stdout] e3cd1d28e4c4ddaf061a71c7497f2d835ebacf060478ce982c6a010a3fe90c15
