[INFO] fetching crate panic-write 0.1.0...
[INFO] testing panic-write-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate panic-write 0.1.0 into /workspace/builds/worker-103/source
[INFO] validating manifest of crates.io crate panic-write 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-write 0.1.0
[INFO] finished tweaking crates.io crate panic-write 0.1.0
[INFO] tweaked toml for crates.io crate panic-write 0.1.0 written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05b7fdcdfd4bc260d0ac8c876945346e078fb7b31314f8ffbc0f633237d43adc
[INFO] running `Command { std: "docker" "start" "-a" "05b7fdcdfd4bc260d0ac8c876945346e078fb7b31314f8ffbc0f633237d43adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05b7fdcdfd4bc260d0ac8c876945346e078fb7b31314f8ffbc0f633237d43adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05b7fdcdfd4bc260d0ac8c876945346e078fb7b31314f8ffbc0f633237d43adc", kill_on_drop: false }`
[INFO] [stdout] 05b7fdcdfd4bc260d0ac8c876945346e078fb7b31314f8ffbc0f633237d43adc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7e70186ebf18f519e534e6a02e89a9f2d19e601071aa0c5ea07fa60b5eec647
[INFO] running `Command { std: "docker" "start" "-a" "e7e70186ebf18f519e534e6a02e89a9f2d19e601071aa0c5ea07fa60b5eec647", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-write v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e7e70186ebf18f519e534e6a02e89a9f2d19e601071aa0c5ea07fa60b5eec647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7e70186ebf18f519e534e6a02e89a9f2d19e601071aa0c5ea07fa60b5eec647", kill_on_drop: false }`
[INFO] [stdout] e7e70186ebf18f519e534e6a02e89a9f2d19e601071aa0c5ea07fa60b5eec647
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a51a9d9cad1843c451be8df3815ab8d4605abbb1d349626a6bd0427d7ff1f4f
[INFO] running `Command { std: "docker" "start" "-a" "2a51a9d9cad1843c451be8df3815ab8d4605abbb1d349626a6bd0427d7ff1f4f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling panic-write v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:91:1
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn panic(info: &PanicInfo) -> ! {
[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/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8d61b92a0a02f53a.so, /opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8d61b92a0a02f53a.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_write`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-write` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2a51a9d9cad1843c451be8df3815ab8d4605abbb1d349626a6bd0427d7ff1f4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a51a9d9cad1843c451be8df3815ab8d4605abbb1d349626a6bd0427d7ff1f4f", kill_on_drop: false }`
[INFO] [stdout] 2a51a9d9cad1843c451be8df3815ab8d4605abbb1d349626a6bd0427d7ff1f4f