[INFO] cloning repository https://github.com/MashPlant/re2dfa
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MashPlant/re2dfa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMashPlant%2Fre2dfa", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMashPlant%2Fre2dfa'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 974358dcd98455ebc498820dc3b3f07a5421a09a
[INFO] checking MashPlant/re2dfa against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMashPlant%2Fre2dfa" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MashPlant/re2dfa on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MashPlant/re2dfa
[INFO] finished tweaking git repo https://github.com/MashPlant/re2dfa
[INFO] tweaked toml for git repo https://github.com/MashPlant/re2dfa written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/MashPlant/pretty_u8`
[INFO] [stderr]     Updating git repository `https://github.com/MashPlant/tools`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63c590a20240d515f33e17beae0d17205e37055661e8662ef02f4e099a75b884
[INFO] running `Command { std: "docker" "start" "-a" "63c590a20240d515f33e17beae0d17205e37055661e8662ef02f4e099a75b884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63c590a20240d515f33e17beae0d17205e37055661e8662ef02f4e099a75b884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c590a20240d515f33e17beae0d17205e37055661e8662ef02f4e099a75b884", kill_on_drop: false }`
[INFO] [stdout] 63c590a20240d515f33e17beae0d17205e37055661e8662ef02f4e099a75b884
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7830919b1e021c623a9b75146596fc72c7fe28e6d50e23752ac379e82a0cef6a
[INFO] running `Command { std: "docker" "start" "-a" "7830919b1e021c623a9b75146596fc72c7fe28e6d50e23752ac379e82a0cef6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling minimal-lexical v0.1.2
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking pretty_u8 v0.1.0 (https://github.com/MashPlant/pretty_u8#ceb1c74e)
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/pretty_u8-e0f36a8ff1f2c1f4/ceb1c74/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(external_doc)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pretty_u8` 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" "7830919b1e021c623a9b75146596fc72c7fe28e6d50e23752ac379e82a0cef6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7830919b1e021c623a9b75146596fc72c7fe28e6d50e23752ac379e82a0cef6a", kill_on_drop: false }`
[INFO] [stdout] 7830919b1e021c623a9b75146596fc72c7fe28e6d50e23752ac379e82a0cef6a