[INFO] cloning 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" "clone" "--bare" "https://github.com/kevinw/eth-rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinw%2Feth-rust-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinw%2Feth-rust-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6aec89529bb6b9d132127cf08997320ba798f04
[INFO] checking kevinw/eth-rust-workshop against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinw%2Feth-rust-workshop" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinw/eth-rust-workshop on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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-4/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-reactor v0.1.1
[INFO] [stderr]   Downloaded lazycell v0.6.0
[INFO] [stderr]   Downloaded url v1.7.0
[INFO] [stderr]   Downloaded heapsize v0.4.2
[INFO] [stderr]   Downloaded hyper-tls v0.1.3
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[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0dde820051593b90d6a666d3157151881b3e6da1d84914f034feb06dd61d4fee
[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" "0dde820051593b90d6a666d3157151881b3e6da1d84914f034feb06dd61d4fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dde820051593b90d6a666d3157151881b3e6da1d84914f034feb06dd61d4fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dde820051593b90d6a666d3157151881b3e6da1d84914f034feb06dd61d4fee", kill_on_drop: false }`
[INFO] [stdout] 0dde820051593b90d6a666d3157151881b3e6da1d84914f034feb06dd61d4fee
[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=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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 590df8f0d85c136fd435f95d9927841ebbcea525ad6257c738f13bef1ad67cca
[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" "590df8f0d85c136fd435f95d9927841ebbcea525ad6257c738f13bef1ad67cca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking try-lock v0.1.0
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling uint v0.2.1
[INFO] [stderr]    Compiling ethereum-types v0.3.2
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking fixed-hash v0.2.1
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling backtrace-sys v0.1.21
[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" "590df8f0d85c136fd435f95d9927841ebbcea525ad6257c738f13bef1ad67cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590df8f0d85c136fd435f95d9927841ebbcea525ad6257c738f13bef1ad67cca", kill_on_drop: false }`
[INFO] [stdout] 590df8f0d85c136fd435f95d9927841ebbcea525ad6257c738f13bef1ad67cca