[INFO] fetching crate esp-backtrace 0.16.0...
[INFO] testing esp-backtrace-0.16.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate esp-backtrace 0.16.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate esp-backtrace 0.16.0
[INFO] finished tweaking crates.io crate esp-backtrace 0.16.0
[INFO] tweaked toml for crates.io crate esp-backtrace 0.16.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate esp-backtrace 0.16.0 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] crate crates.io crate esp-backtrace 0.16.0 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded esp-metadata v0.7.0
[INFO] [stderr]   Downloaded esp-build v0.3.0
[INFO] [stderr]   Downloaded esp-config v0.4.0
[INFO] [stderr]   Downloaded semihosting v0.1.20
[INFO] [stderr]   Downloaded esp-println v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 55b65f25986f797efb2ed7cb2ba340424b41678631ecd20d5428d0a04f160f86
[INFO] running `Command { std: "docker" "start" "-a" "55b65f25986f797efb2ed7cb2ba340424b41678631ecd20d5428d0a04f160f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55b65f25986f797efb2ed7cb2ba340424b41678631ecd20d5428d0a04f160f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55b65f25986f797efb2ed7cb2ba340424b41678631ecd20d5428d0a04f160f86", kill_on_drop: false }`
[INFO] [stdout] 55b65f25986f797efb2ed7cb2ba340424b41678631ecd20d5428d0a04f160f86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8c01baf3afecd1653f7d7c6cbe5954eeb6676d4328acaccf03ee82672b4c1763
[INFO] running `Command { std: "docker" "start" "-a" "8c01baf3afecd1653f7d7c6cbe5954eeb6676d4328acaccf03ee82672b4c1763", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling esp-config v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling strum_macros v0.27.1
[INFO] [stderr]    Compiling esp-build v0.3.0
[INFO] [stderr]    Compiling strum v0.27.1
[INFO] [stderr]    Compiling basic-toml v0.1.10
[INFO] [stderr]    Compiling esp-metadata v0.7.0
[INFO] [stderr]    Compiling esp-backtrace v0.16.0 (/opt/rustwide/workdir)
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] ERROR: expected exactly one enabled feature from feature group:
[INFO] [stderr]   ["defmt", "println"]
[INFO] [stderr]     
[INFO] [stderr] 
[INFO] [stdout] error: proc macro panicked
[INFO] [stdout]  --> build.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     assert_unique_used_features!("defmt", "println");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: message: Build failed
[INFO] [stdout]   = note: this error originates in the macro `assert_unique_used_features` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `esp-backtrace` (build script) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "8c01baf3afecd1653f7d7c6cbe5954eeb6676d4328acaccf03ee82672b4c1763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c01baf3afecd1653f7d7c6cbe5954eeb6676d4328acaccf03ee82672b4c1763", kill_on_drop: false }`
[INFO] [stdout] 8c01baf3afecd1653f7d7c6cbe5954eeb6676d4328acaccf03ee82672b4c1763