[INFO] cloning repository https://github.com/Ocelmot/Synapse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ocelmot/Synapse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a47fe55c276d5270f3bce85062a2bd0a642781b
[INFO] checking Ocelmot/Synapse against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] finished tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] tweaked toml for git repo https://github.com/Ocelmot/Synapse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ocelmot/Synapse on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ocelmot/Synapse 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/spider`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/link_set`
[INFO] [stderr] error: failed to select a version for `serde`.
[INFO] [stderr]     ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
[INFO] [stderr]     ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.228` are: 1.0.228
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `serde v1.0.203`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
[INFO] [stderr]     ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `serde` which could resolve this conflict
[INFO] checking Ocelmot/Synapse against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] finished tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] tweaked toml for git repo https://github.com/Ocelmot/Synapse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ocelmot/Synapse on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ocelmot/Synapse 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/spider`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/link_set`
[INFO] [stderr] error: failed to select a version for `serde`.
[INFO] [stderr]     ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
[INFO] [stderr]     ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.228` are: 1.0.228
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `serde v1.0.203`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
[INFO] [stderr]     ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `serde` which could resolve this conflict
[INFO] checking Ocelmot/Synapse against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] finished tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] tweaked toml for git repo https://github.com/Ocelmot/Synapse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ocelmot/Synapse on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ocelmot/Synapse 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/spider`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/link_set`
[INFO] [stderr] error: failed to select a version for `serde`.
[INFO] [stderr]     ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
[INFO] [stderr]     ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.228` are: 1.0.228
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `serde v1.0.203`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
[INFO] [stderr]     ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `serde` which could resolve this conflict
[INFO] checking Ocelmot/Synapse against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] finished tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] tweaked toml for git repo https://github.com/Ocelmot/Synapse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ocelmot/Synapse on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ocelmot/Synapse 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/spider`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/link_set`
[INFO] [stderr] error: failed to select a version for `serde`.
[INFO] [stderr]     ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
[INFO] [stderr]     ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.228` are: 1.0.228
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `serde v1.0.203`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
[INFO] [stderr]     ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `serde` which could resolve this conflict
[INFO] checking Ocelmot/Synapse against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcelmot%2FSynapse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] finished tweaking git repo https://github.com/Ocelmot/Synapse
[INFO] tweaked toml for git repo https://github.com/Ocelmot/Synapse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ocelmot/Synapse on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ocelmot/Synapse 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/spider`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Ocelmot/link_set`
[INFO] [stderr] error: failed to select a version for `serde`.
[INFO] [stderr]     ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
[INFO] [stderr]     ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
[INFO] [stderr]     ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.228` are: 1.0.228
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `serde v1.0.203`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
[INFO] [stderr]     ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `serde` 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 git repository `https://github.com/Ocelmot/spider`
           Updating crates.io index
           Updating git repository `https://github.com/Ocelmot/link_set`
       error: failed to select a version for `serde`.
           ... required by package `link_set v0.1.0 (https://github.com/Ocelmot/link_set#c4830fea)`
           ... which satisfies git dependency `link_set` of package `spider_link v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
           ... which satisfies git dependency `spider_link` of package `spider_client v0.1.0 (https://github.com/Ocelmot/spider#69cec73d)`
           ... which satisfies git dependency `spider_client` of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
       versions that meet the requirements `^1.0.228` are: 1.0.228
       
       all possible versions conflict with previously selected packages.
       
         previously selected package `serde v1.0.203`
           ... which satisfies dependency `serde = "^1.0.194"` (locked to 1.0.203) of package `serde_json v1.0.120`
           ... which satisfies dependency `serde_json = "^1.0.73"` (locked to 1.0.120) of package `synapse v0.1.0 (/workspace/builds/worker-3-tc2/source)`
       
       failed to select a version for `serde` which could resolve this conflict