[INFO] cloning repository https://github.com/Nercury/comics-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nercury/comics-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dca2be039b38a16227882ada0128e2887d0aa001
[INFO] testing Nercury/comics-rs against master#61223975d46f794466efa832bc7562b9707ecc46+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain 61223975d46f794466efa832bc7562b9707ecc46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61223975d46f794466efa832bc7562b9707ecc46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+61223975d46f794466efa832bc7562b9707ecc46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc1/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing Nercury/comics-rs against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc2/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[INFO] testing Nercury/comics-rs against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc2/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[INFO] testing Nercury/comics-rs against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc2/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[INFO] testing Nercury/comics-rs against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc2/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[INFO] testing Nercury/comics-rs against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Fcomics-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/comics-rs on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/comics-rs
[INFO] finished tweaking git repo https://github.com/Nercury/comics-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/comics-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/comics-rs 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `syntex = "^0.18.0"`
[INFO] [stderr] candidate versions found which didn't match: 0.58.1, 0.58.0, 0.57.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_codegen v0.6.1`
[INFO] [stderr]     ... which satisfies dependency `serde_codegen = "*"` (locked to 0.6.1) of package `comics v0.0.1 (/workspace/builds/worker-5-tc2/source)`
[INFO] [stderr] perhaps a crate was updated and forgotten to be re-vendored?
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.