[INFO] cloning repository https://github.com/zakimal/tiny-substrate-client
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zakimal/tiny-substrate-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzakimal%2Ftiny-substrate-client"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzakimal%2Ftiny-substrate-client'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e767566908840b33b6d910f843e0c0a5c88b5666
[INFO] checking zakimal/tiny-substrate-client against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzakimal%2Ftiny-substrate-client" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zakimal/tiny-substrate-client on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zakimal/tiny-substrate-client
[INFO] finished tweaking git repo https://github.com/zakimal/tiny-substrate-client
[INFO] tweaked toml for git repo https://github.com/zakimal/tiny-substrate-client written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/zakimal/tiny-substrate-client already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2fd31231651bb56e4492af4d1a2ad82a8a7ddf36dc25f536d6371c066096aa0f
[INFO] running `"docker" "start" "-a" "2fd31231651bb56e4492af4d1a2ad82a8a7ddf36dc25f536d6371c066096aa0f"`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.18
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking tokio-sync v0.1.2
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking colored v1.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking tokio-executor v0.1.6
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling openssl-sys v0.9.41
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.11
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/distributions/bernoulli.rs:85:28
[INFO] [stderr]    |
[INFO] [stderr] 85 |         Bernoulli { p_int: (p * SCALE) as u64 }
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/distributions/bernoulli.rs:105:21
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let p_int = ((numerator as f64 / denominator as f64) * SCALE) as u64;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/distributions/poisson.rs:95:30
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 int_result = result as u64;
[INFO] [stderr]    |                              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/distributions/binomial.rs:124:22
[INFO] [stderr]     |
[INFO] [stderr] 124 |             self.n - lresult as u64
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/distributions/binomial.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             lresult as u64
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `rand`.
[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 `"docker" "inspect" "2fd31231651bb56e4492af4d1a2ad82a8a7ddf36dc25f536d6371c066096aa0f"`
[INFO] running `"docker" "rm" "-f" "2fd31231651bb56e4492af4d1a2ad82a8a7ddf36dc25f536d6371c066096aa0f"`
[INFO] [stdout] 2fd31231651bb56e4492af4d1a2ad82a8a7ddf36dc25f536d6371c066096aa0f