[INFO] cloning repository https://github.com/atippax/learn-rust-arduino
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/atippax/learn-rust-arduino" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f777f977c60e5c6e8929a7a3e92d8db3292bef09
[INFO] checking atippax/learn-rust-arduino against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] finished tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] tweaked toml for git repo https://github.com/atippax/learn-rust-arduino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atippax/learn-rust-arduino on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atippax/learn-rust-arduino 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.arduino-hal.libudev-sys
[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 `proc-macro2`.
[INFO] [stderr]     ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.79`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[INFO] checking atippax/learn-rust-arduino against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] finished tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] tweaked toml for git repo https://github.com/atippax/learn-rust-arduino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atippax/learn-rust-arduino on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atippax/learn-rust-arduino 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.arduino-hal.libudev-sys
[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 `proc-macro2`.
[INFO] [stderr]     ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.79`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[INFO] checking atippax/learn-rust-arduino against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] finished tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] tweaked toml for git repo https://github.com/atippax/learn-rust-arduino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atippax/learn-rust-arduino on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atippax/learn-rust-arduino 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.arduino-hal.libudev-sys
[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 `proc-macro2`.
[INFO] [stderr]     ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.79`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[INFO] checking atippax/learn-rust-arduino against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] finished tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] tweaked toml for git repo https://github.com/atippax/learn-rust-arduino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atippax/learn-rust-arduino on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atippax/learn-rust-arduino 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.arduino-hal.libudev-sys
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `proc-macro2`.
[INFO] [stderr]     ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.79`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[INFO] checking atippax/learn-rust-arduino against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatippax%2Flearn-rust-arduino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] finished tweaking git repo https://github.com/atippax/learn-rust-arduino
[INFO] tweaked toml for git repo https://github.com/atippax/learn-rust-arduino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atippax/learn-rust-arduino on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atippax/learn-rust-arduino 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.arduino-hal.libudev-sys
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `proc-macro2`.
[INFO] [stderr]     ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.79`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
       warning: unused manifest key: dependencies.arduino-hal.libudev-sys
           Updating crates.io index
       error: failed to select a version for `proc-macro2`.
           ... required by package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
       versions that meet the requirements `^1.0.92` are: 1.0.106, 1.0.105, 1.0.104, 1.0.103, 1.0.102, 1.0.101, 1.0.100, 1.0.99, 1.0.98, 1.0.97, 1.0.96, 1.0.95, 1.0.94, 1.0.93, 1.0.92
       
       all possible versions conflict with previously selected packages
       
         previously selected package `proc-macro2 v1.0.79`
           ... which satisfies dependency `proc-macro2 = "=1.0.79"` of package `rust-arduino v0.1.0 (/workspace/builds/worker-2-tc2/source)`
       
       failed to select a version for `proc-macro2` which could resolve this conflict