[INFO] fetching crate taskem 0.0.0...
[INFO] checking taskem-0.0.0 against beta for pr-78714
[INFO] extracting crate taskem 0.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate taskem 0.0.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taskem 0.0.0
[INFO] finished tweaking crates.io crate taskem 0.0.0
[INFO] tweaked toml for crates.io crate taskem 0.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 284a4685924930163468fb313f13ad842cdd008dcbfb3f2da711cf5cd78c8e54
[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" "284a4685924930163468fb313f13ad842cdd008dcbfb3f2da711cf5cd78c8e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "284a4685924930163468fb313f13ad842cdd008dcbfb3f2da711cf5cd78c8e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284a4685924930163468fb313f13ad842cdd008dcbfb3f2da711cf5cd78c8e54", kill_on_drop: false }`
[INFO] [stdout] 284a4685924930163468fb313f13ad842cdd008dcbfb3f2da711cf5cd78c8e54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6f867c95e9d4335b5d13cf226505f6892c7e30febe02018ed9cb0d943f8b03d
[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" "e6f867c95e9d4335b5d13cf226505f6892c7e30febe02018ed9cb0d943f8b03d", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]     Checking maybe-single v0.4.0
[INFO] [stderr]    Compiling err-derive v0.1.6
[INFO] [stderr]     Checking nom v4.1.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking testcontainers v0.8.1
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stdout] error[E0433]: failed to resolve: could not find `__rt` in `quote`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/err-derive-0.1.6/src/lib.rs:145:63
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn display_body(s: &synstructure::Structure) -> Option<quote::__rt::TokenStream> {
[INFO] [stdout]     |                                                               ^^^^ could not find `__rt` in `quote`
[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 E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `err-derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e6f867c95e9d4335b5d13cf226505f6892c7e30febe02018ed9cb0d943f8b03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6f867c95e9d4335b5d13cf226505f6892c7e30febe02018ed9cb0d943f8b03d", kill_on_drop: false }`
[INFO] [stdout] e6f867c95e9d4335b5d13cf226505f6892c7e30febe02018ed9cb0d943f8b03d