[INFO] updating cached repository https://github.com/kevinw/eth-rust-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6aec89529bb6b9d132127cf08997320ba798f04
[INFO] checking kevinw/eth-rust-workshop against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinw%2Feth-rust-workshop" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinw/eth-rust-workshop on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevinw/eth-rust-workshop
[INFO] finished tweaking git repo https://github.com/kevinw/eth-rust-workshop
[INFO] tweaked toml for git repo https://github.com/kevinw/eth-rust-workshop written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinw/eth-rust-workshop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71865090cfa44a366b25f4aaca0d8ff72eff1008f0e47fc1f9641ca151f76eb8
[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" "71865090cfa44a366b25f4aaca0d8ff72eff1008f0e47fc1f9641ca151f76eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71865090cfa44a366b25f4aaca0d8ff72eff1008f0e47fc1f9641ca151f76eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71865090cfa44a366b25f4aaca0d8ff72eff1008f0e47fc1f9641ca151f76eb8", kill_on_drop: false }`
[INFO] [stdout] 71865090cfa44a366b25f4aaca0d8ff72eff1008f0e47fc1f9641ca151f76eb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fea31477b022d2c39d2e984d85e77655b5b5c03b230e40aaa02ccb9cca94beb
[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" "6fea31477b022d2c39d2e984d85e77655b5b5c03b230e40aaa02ccb9cca94beb", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking tokio-timer v0.2.3
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking serde_json v1.0.18
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking want v0.0.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking mime v0.3.7
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking fixed-hash v0.2.1
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stdout] error[E0428]: the name `impl_heapsize_for_hash` is defined multiple times
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fixed-hash-0.2.1/src/hash.rs:431:1
[INFO] [stdout]     |
[INFO] [stdout] 325 | macro_rules! impl_heapsize_for_hash {
[INFO] [stdout]     | ----------------------------------- previous definition of the macro `impl_heapsize_for_hash` here
[INFO] [stdout] ...
[INFO] [stdout] 431 | macro_rules! impl_heapsize_for_hash {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `impl_heapsize_for_hash` redefined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `impl_heapsize_for_hash` must be defined only once in the macro namespace of this module
[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 E0428`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fixed-hash`.
[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" "6fea31477b022d2c39d2e984d85e77655b5b5c03b230e40aaa02ccb9cca94beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fea31477b022d2c39d2e984d85e77655b5b5c03b230e40aaa02ccb9cca94beb", kill_on_drop: false }`
[INFO] [stdout] 6fea31477b022d2c39d2e984d85e77655b5b5c03b230e40aaa02ccb9cca94beb