[INFO] fetching crate robin_core 0.4.13...
[INFO] testing robin_core-0.4.13 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate robin_core 0.4.13 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate robin_core 0.4.13 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 robin_core 0.4.13
[INFO] finished tweaking crates.io crate robin_core 0.4.13
[INFO] tweaked toml for crates.io crate robin_core 0.4.13 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[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 ansi_term v0.9.0
[INFO] [stderr]   Downloaded pest v1.0.6
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded pest_derive v1.0.8
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f5a0713cff029dad8ad4849d6bd47d9c5e3e8a1f05f2c12496b8e3071f48731f
[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" "f5a0713cff029dad8ad4849d6bd47d9c5e3e8a1f05f2c12496b8e3071f48731f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5a0713cff029dad8ad4849d6bd47d9c5e3e8a1f05f2c12496b8e3071f48731f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a0713cff029dad8ad4849d6bd47d9c5e3e8a1f05f2c12496b8e3071f48731f", kill_on_drop: false }`
[INFO] [stdout] f5a0713cff029dad8ad4849d6bd47d9c5e3e8a1f05f2c12496b8e3071f48731f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0c1b2d68e62a18d6da1753575c3f3575a2b169f04660d3d48ea1a957619c06c8
[INFO] running `Command { std: "docker" "start" "-a" "0c1b2d68e62a18d6da1753575c3f3575a2b169f04660d3d48ea1a957619c06c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling robin_core v0.4.13 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `pest::inputs`
[INFO] [stdout]  --> src/parser.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use pest::inputs::StrInput;
[INFO] [stdout]   |           ^^^^^^ could not find `inputs` in `pest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this struct takes 1 generic argument but 2 generic arguments were supplied
[INFO] [stdout]   --> src/parser.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn parse_expression(input: Pair<Rule, StrInput>) -> Expression {
[INFO] [stdout]    |                            ^^^^       -------- help: remove this generic argument
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            expected 1 generic argument
[INFO] [stdout]    |
[INFO] [stdout] note: struct defined here, with 1 generic parameter: `R`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pest-1.0.6/src/iterators/pair.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Pair<'i, R> {
[INFO] [stdout]    |            ^^^^     -
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `robin_core` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0c1b2d68e62a18d6da1753575c3f3575a2b169f04660d3d48ea1a957619c06c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1b2d68e62a18d6da1753575c3f3575a2b169f04660d3d48ea1a957619c06c8", kill_on_drop: false }`
[INFO] [stdout] 0c1b2d68e62a18d6da1753575c3f3575a2b169f04660d3d48ea1a957619c06c8