[INFO] fetching crate blacklog 0.1.1...
[INFO] testing blacklog-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate blacklog 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate blacklog 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blacklog 0.1.1
[INFO] finished tweaking crates.io crate blacklog 0.1.1
[INFO] tweaked toml for crates.io crate blacklog 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peg v0.3.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30a99d330eb67a744a27382eeb79147bca8978461b9b6fd1123c414c57d8f64a
[INFO] running `Command { std: "docker" "start" "-a" "30a99d330eb67a744a27382eeb79147bca8978461b9b6fd1123c414c57d8f64a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30a99d330eb67a744a27382eeb79147bca8978461b9b6fd1123c414c57d8f64a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a99d330eb67a744a27382eeb79147bca8978461b9b6fd1123c414c57d8f64a", kill_on_drop: false }`
[INFO] [stdout] 30a99d330eb67a744a27382eeb79147bca8978461b9b6fd1123c414c57d8f64a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7e1e2fb18cf51520367b3aceb5077777b0a97abb98672875e3424bb42d63a32
[INFO] running `Command { std: "docker" "start" "-a" "a7e1e2fb18cf51520367b3aceb5077777b0a97abb98672875e3424bb42d63a32", kill_on_drop: false }`
[INFO] [stderr]    Compiling peg v0.3.18
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/peg-0.3.18/src/peg_syntax_ext.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, quote, rustc_private, box_patterns)]
[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[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/peg-0.3.18/src/peg_syntax_ext.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, quote, rustc_private, box_patterns)]
[INFO] [stdout]   |                              ^^^^^ feature has been removed
[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/peg-0.3.18/src/peg_syntax_ext.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `peg` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a7e1e2fb18cf51520367b3aceb5077777b0a97abb98672875e3424bb42d63a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e1e2fb18cf51520367b3aceb5077777b0a97abb98672875e3424bb42d63a32", kill_on_drop: false }`
[INFO] [stdout] a7e1e2fb18cf51520367b3aceb5077777b0a97abb98672875e3424bb42d63a32