[INFO] cloning repository https://github.com/BHouwens/cryptofun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BHouwens/cryptofun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBHouwens%2Fcryptofun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBHouwens%2Fcryptofun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54315949c892a3154c65cb05ce636aae67f0406d
[INFO] checking BHouwens/cryptofun against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBHouwens%2Fcryptofun" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BHouwens/cryptofun on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BHouwens/cryptofun
[INFO] finished tweaking git repo https://github.com/BHouwens/cryptofun
[INFO] tweaked toml for git repo https://github.com/BHouwens/cryptofun written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/BHouwens/cryptofun already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded ramp v0.5.9
[INFO] [stderr]   Downloaded digest v0.7.6
[INFO] [stderr]   Downloaded bincode v1.1.2
[INFO] [stderr]   Downloaded generic-array v0.9.0
[INFO] [stderr]   Downloaded blake2 v0.7.1
[INFO] [stderr]   Downloaded crypto-mac v0.5.2
[INFO] [stderr]   Downloaded hamming v0.1.3
[INFO] [stderr]   Downloaded sha3 v0.7.3
[INFO] [stderr]   Downloaded cc v1.0.32
[INFO] [stderr]   Downloaded rustc-cfg v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf9dbbabe8e83ddf56097a90acb78c30ff769cd5ec28342d7e15c3010be96b11
[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" "bf9dbbabe8e83ddf56097a90acb78c30ff769cd5ec28342d7e15c3010be96b11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf9dbbabe8e83ddf56097a90acb78c30ff769cd5ec28342d7e15c3010be96b11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf9dbbabe8e83ddf56097a90acb78c30ff769cd5ec28342d7e15c3010be96b11", kill_on_drop: false }`
[INFO] [stdout] bf9dbbabe8e83ddf56097a90acb78c30ff769cd5ec28342d7e15c3010be96b11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 885d5b5a84e64c8780209fcca72c5968be91b7a07afec769548a4213347cff1c
[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" "885d5b5a84e64c8780209fcca72c5968be91b7a07afec769548a4213347cff1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]    Compiling rustc-cfg v0.2.0
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking ieee754 v0.2.6
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling bincode v1.1.2
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]    Compiling ramp v0.5.9
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ramp-0.5.9/src/int.rs:3697:1
[INFO] [stdout]      |
[INFO] [stdout] 3697 | / unsafe impl std::iter::Step for Int {
[INFO] [stdout] 3698 | |     fn steps_between(start: &Int, end: &Int) -> Option<usize> {
[INFO] [stdout] 3699 | |         let diff = (start - end).abs();
[INFO] [stdout] 3700 | |
[INFO] [stdout] ...    |
[INFO] [stdout] 3715 | |     }
[INFO] [stdout] 3716 | | }
[INFO] [stdout]      | |_^
[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 E0199`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ramp`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "885d5b5a84e64c8780209fcca72c5968be91b7a07afec769548a4213347cff1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885d5b5a84e64c8780209fcca72c5968be91b7a07afec769548a4213347cff1c", kill_on_drop: false }`
[INFO] [stdout] 885d5b5a84e64c8780209fcca72c5968be91b7a07afec769548a4213347cff1c