[INFO] fetching crate no-panics-whatsoever 0.1.0...
[INFO] testing no-panics-whatsoever-0.1.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate no-panics-whatsoever 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate no-panics-whatsoever 0.1.0
[INFO] finished tweaking crates.io crate no-panics-whatsoever 0.1.0
[INFO] tweaked toml for crates.io crate no-panics-whatsoever 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate no-panics-whatsoever 0.1.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd411488b4834ce2c553bb5ba362d28dbb97e07275badb632e90caa2f0453460
[INFO] running `Command { std: "docker" "start" "-a" "fd411488b4834ce2c553bb5ba362d28dbb97e07275badb632e90caa2f0453460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd411488b4834ce2c553bb5ba362d28dbb97e07275badb632e90caa2f0453460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd411488b4834ce2c553bb5ba362d28dbb97e07275badb632e90caa2f0453460", kill_on_drop: false }`
[INFO] [stdout] fd411488b4834ce2c553bb5ba362d28dbb97e07275badb632e90caa2f0453460
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 12fb51941e3da95a07b8535389d0050d3d9a6222146cb57c9f9837f5e0bbeb62
[INFO] running `Command { std: "docker" "start" "-a" "12fb51941e3da95a07b8535389d0050d3d9a6222146cb57c9f9837f5e0bbeb62", kill_on_drop: false }`
[INFO] [stderr]    Compiling no-panics-whatsoever v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "12fb51941e3da95a07b8535389d0050d3d9a6222146cb57c9f9837f5e0bbeb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12fb51941e3da95a07b8535389d0050d3d9a6222146cb57c9f9837f5e0bbeb62", kill_on_drop: false }`
[INFO] [stdout] 12fb51941e3da95a07b8535389d0050d3d9a6222146cb57c9f9837f5e0bbeb62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 7ce8e312b15eb333e58541d51767f7a83f0739f55823f835642a8beabb6b4fb2
[INFO] running `Command { std: "docker" "start" "-a" "7ce8e312b15eb333e58541d51767f7a83f0739f55823f835642a8beabb6b4fb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling no-panics-whatsoever v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | / fn panic(_: &PanicInfo) -> ! {
[INFO] [stdout] 38 | |     extern "C" {
[INFO] [stdout] 39 | |         #[cfg_attr(
[INFO] [stdout] 40 | |             target_family = "unix", link_name = "\n\n\x1b[s\x1b[1000D\x1b[0;31m\x1b[1merror\x1b[0m\x1b[1m: the static assertion that no p...
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     unsafe { never_panic() }
[INFO] [stdout] 47 | | }
[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/8de4c7234dd9b97c9d76b58671343fdbbc9a433e/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-6552f92f1a5eadae.so, /opt/rustwide/rustup-home/toolchains/8de4c7234dd9b97c9d76b58671343fdbbc9a433e/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-6552f92f1a5eadae.rlib
[INFO] [stdout]    = note: second definition in the local crate (`no_panics_whatsoever`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `no-panics-whatsoever` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7ce8e312b15eb333e58541d51767f7a83f0739f55823f835642a8beabb6b4fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce8e312b15eb333e58541d51767f7a83f0739f55823f835642a8beabb6b4fb2", kill_on_drop: false }`
[INFO] [stdout] 7ce8e312b15eb333e58541d51767f7a83f0739f55823f835642a8beabb6b4fb2