[INFO] cloning repository https://github.com/Siimas/blockchain-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Siimas/blockchain-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6fc6dd5068afc3751ea8a77c9f96e4fe771c1bc
[INFO] checking Siimas/blockchain-in-rust against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] finished tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] tweaked toml for git repo https://github.com/Siimas/blockchain-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Siimas/blockchain-in-rust on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Siimas/blockchain-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `k256`.
[INFO] [stderr]     ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0
[INFO] [stderr] 
[INFO] [stderr] package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
[INFO] [stderr]  A required dependency with that name exists, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `k256` which could resolve this conflict
[INFO] checking Siimas/blockchain-in-rust against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] finished tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] tweaked toml for git repo https://github.com/Siimas/blockchain-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Siimas/blockchain-in-rust on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Siimas/blockchain-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `k256`.
[INFO] [stderr]     ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0
[INFO] [stderr] 
[INFO] [stderr] package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
[INFO] [stderr]  A required dependency with that name exists, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `k256` which could resolve this conflict
[INFO] checking Siimas/blockchain-in-rust against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] finished tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] tweaked toml for git repo https://github.com/Siimas/blockchain-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Siimas/blockchain-in-rust on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Siimas/blockchain-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `k256`.
[INFO] [stderr]     ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0
[INFO] [stderr] 
[INFO] [stderr] package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
[INFO] [stderr]  A required dependency with that name exists, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `k256` which could resolve this conflict
[INFO] checking Siimas/blockchain-in-rust against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] finished tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] tweaked toml for git repo https://github.com/Siimas/blockchain-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Siimas/blockchain-in-rust on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Siimas/blockchain-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `k256`.
[INFO] [stderr]     ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0
[INFO] [stderr] 
[INFO] [stderr] package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
[INFO] [stderr]  A required dependency with that name exists, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `k256` which could resolve this conflict
[INFO] checking Siimas/blockchain-in-rust against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiimas%2Fblockchain-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] finished tweaking git repo https://github.com/Siimas/blockchain-in-rust
[INFO] tweaked toml for git repo https://github.com/Siimas/blockchain-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Siimas/blockchain-in-rust on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Siimas/blockchain-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `k256`.
[INFO] [stderr]     ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0
[INFO] [stderr] 
[INFO] [stderr] package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
[INFO] [stderr]  A required dependency with that name exists, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `k256` which could resolve this conflict


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
error: failed to select a version for `k256`.
    ... required by package `blockchain-in-rust v0.1.0 (/workspace/builds/worker-7-tc2/source)`
versions that meet the requirements `^0.13` are: 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13.0

package `blockchain-in-rust` depends on `k256` with feature `rand_core` but `k256` does not have that feature.
 A required dependency with that name exists, but only optional dependencies can be used as features.


failed to select a version for `k256` which could resolve this conflict