[INFO] cloning repository https://github.com/tetsu-sh/rust_embedded
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tetsu-sh/rust_embedded" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e684018ccf268a5eb101e5fabc90e18cbdb486c
[INFO] checking tetsu-sh/rust_embedded against master#4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 for pr-134276
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain 4847d6a9d07d4be9ba3196f6ad444af2d7bdde72
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/tetsu-sh/rust_embedded
[INFO] finished tweaking git repo https://github.com/tetsu-sh/rust_embedded
[INFO] tweaked toml for git repo https://github.com/tetsu-sh/rust_embedded written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsu-sh/rust_embedded 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" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "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 `cortex-m-rt`.
[INFO] [stderr]     ... required by package `hello v0.1.0 (/workspace/builds/worker-2-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] the package `cortex-m-rt` links to the native library `cortex-m-rt`, but it conflicts with a previous package which links to `cortex-m-rt` as well:
[INFO] [stderr] package `cortex-m-rt v0.6.15`
[INFO] [stderr]     ... which satisfies dependency `cortex-m-rt = "^0.6.10"` of package `stm32f4xx-hal v0.7.0`
[INFO] [stderr]     ... which satisfies dependency `stm32f4xx-hal = "^0.7.0"` of package `hello v0.1.0 (/workspace/builds/worker-2-tc1/source)`
[INFO] [stderr] Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict


ExecutionFailed(ExitStatus(unix_wait_status(25856)))