[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 try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "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-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] 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-3-tc2/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict
[INFO] checking tetsu-sh/rust_embedded against try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "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-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] 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-3-tc2/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict
[INFO] checking tetsu-sh/rust_embedded against try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "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-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] 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-3-tc2/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict
[INFO] checking tetsu-sh/rust_embedded against try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "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-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] 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-3-tc2/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict
[INFO] checking tetsu-sh/rust_embedded against try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsu-sh%2Frust_embedded" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tetsu-sh/rust_embedded on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
[INFO] [stderr] 
[INFO] [stderr] 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-3-tc2/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cortex-m-rt` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Updating crates.io index
       error: failed to select a version for `cortex-m-rt`.
           ... required by package `hello v0.1.0 (/workspace/builds/worker-3-tc2/source)`
       versions that meet the requirements `^0.7.2` are: 0.7.5, 0.7.3
       
       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:
       package `cortex-m-rt v0.6.15`
           ... which satisfies dependency `cortex-m-rt = "^0.6.10"` of package `stm32f4xx-hal v0.7.0`
           ... which satisfies dependency `stm32f4xx-hal = "^0.7.0"` of package `hello v0.1.0 (/workspace/builds/worker-3-tc2/source)`
       note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
       for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
       help: try to adjust your dependencies so that only one package uses the `links = "cortex-m-rt"` value
       
       failed to select a version for `cortex-m-rt` which could resolve this conflict