[INFO] cloning repository https://github.com/rej696/rust_hercules
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rej696/rust_hercules" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frej696%2Frust_hercules", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frej696%2Frust_hercules'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39062921f50c6f75ce103d33fb8867585d99208d
[INFO] checking rej696/rust_hercules against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frej696%2Frust_hercules" "/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
[INFO] started tweaking git repo https://github.com/rej696/rust_hercules
[INFO] finished tweaking git repo https://github.com/rej696/rust_hercules
[INFO] tweaked toml for git repo https://github.com/rej696/rust_hercules written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rej696/rust_hercules on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rej696/rust_hercules 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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0d5c616028b1826f209eb028d5ad8a7eaae9986a7db234bcea230f163a6a86d
[INFO] running `Command { std: "docker" "start" "-a" "c0d5c616028b1826f209eb028d5ad8a7eaae9986a7db234bcea230f163a6a86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0d5c616028b1826f209eb028d5ad8a7eaae9986a7db234bcea230f163a6a86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0d5c616028b1826f209eb028d5ad8a7eaae9986a7db234bcea230f163a6a86d", kill_on_drop: false }`
[INFO] [stdout] c0d5c616028b1826f209eb028d5ad8a7eaae9986a7db234bcea230f163a6a86d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8410176ac3543735d75adac7383d6865b751cb980a1457b67d170a6c2f7a9ef8
[INFO] running `Command { std: "docker" "start" "-a" "8410176ac3543735d75adac7383d6865b751cb980a1457b67d170a6c2f7a9ef8", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_hercules v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / fn panic (_info: &PanicInfo) -> ! {
[INFO] [stdout] 21 | |     loop {}
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9fbdd90241d2d923.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rust_hercules`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_hercules` (bin "rust_hercules") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_hercules` (bin "rust_hercules" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "8410176ac3543735d75adac7383d6865b751cb980a1457b67d170a6c2f7a9ef8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8410176ac3543735d75adac7383d6865b751cb980a1457b67d170a6c2f7a9ef8", kill_on_drop: false }`
[INFO] [stdout] 8410176ac3543735d75adac7383d6865b751cb980a1457b67d170a6c2f7a9ef8