[INFO] cloning repository https://github.com/dcchut/robbot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dcchut/robbot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcchut%2Frobbot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcchut%2Frobbot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a564713c0e36f084eae0bef81644a898ad2bfef6
[INFO] documenting dcchut/robbot 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%2Fdcchut%2Frobbot" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dcchut/robbot 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/dcchut/robbot
[INFO] finished tweaking git repo https://github.com/dcchut/robbot
[INFO] tweaked toml for git repo https://github.com/dcchut/robbot written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dcchut/robbot 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/dcchut/dcc-scryfall`
[INFO] [stderr]     Updating git repository `https://github.com/dcchut/serenity`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded random v0.12.2
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[INFO] [stderr]   Downloaded ctor v0.1.16
[INFO] [stderr]   Downloaded bumpalo v3.1.2
[INFO] [stderr]   Downloaded libsqlite3-sys v0.22.1
[INFO] [stderr]   Downloaded security-framework-sys v2.1.1
[INFO] [stderr]   Downloaded pin-project-internal v1.0.3
[INFO] [stderr]   Downloaded tokio-stream v0.1.1
[INFO] [stderr]   Downloaded uwl v0.6.0
[INFO] [stderr]   Downloaded pin-project v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] 74139934d2defa85f5881221042a0cf43a6e7213d858d29a364cf35565a2249f
[INFO] running `Command { std: "docker" "start" "-a" "74139934d2defa85f5881221042a0cf43a6e7213d858d29a364cf35565a2249f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74139934d2defa85f5881221042a0cf43a6e7213d858d29a364cf35565a2249f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74139934d2defa85f5881221042a0cf43a6e7213d858d29a364cf35565a2249f", kill_on_drop: false }`
[INFO] [stdout] 74139934d2defa85f5881221042a0cf43a6e7213d858d29a364cf35565a2249f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] bcc945e56654050d20f8d8b2013775f8a9d4dd6a3cf907248ad7a167a8b4c0b7
[INFO] running `Command { std: "docker" "start" "-a" "bcc945e56654050d20f8d8b2013775f8a9d4dd6a3cf907248ad7a167a8b4c0b7", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.94
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[INFO] [stderr]     Checking http-body v0.4.0
[INFO] [stderr]    Compiling ctor v0.1.16
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.7
[INFO] [stderr]    Compiling pin-project-internal v1.0.3
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling command_attr v0.2.0 (https://github.com/dcchut/serenity?branch=serenity-async-await#51561dd1)
[INFO] [stderr]    Compiling async-recursion v0.3.1
[INFO] [stderr]     Checking async-stream v0.3.0
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking tungstenite v0.12.0
[INFO] [stderr]     Checking pin-project v0.4.7
[INFO] [stderr]     Checking async-global-executor v2.0.2
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[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stdout] error[E0432]: unresolved import `futures_core::core_reexport`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.1/src/lib.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub use futures_core::core_reexport;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `core_reexport` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-util` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bcc945e56654050d20f8d8b2013775f8a9d4dd6a3cf907248ad7a167a8b4c0b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc945e56654050d20f8d8b2013775f8a9d4dd6a3cf907248ad7a167a8b4c0b7", kill_on_drop: false }`
[INFO] [stdout] bcc945e56654050d20f8d8b2013775f8a9d4dd6a3cf907248ad7a167a8b4c0b7
