[INFO] fetching crate wasmer-wast 7.1.0...
[INFO] testing wasmer-wast-7.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate wasmer-wast 7.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate wasmer-wast 7.1.0
[INFO] finished tweaking crates.io crate wasmer-wast 7.1.0
[INFO] tweaked toml for crates.io crate wasmer-wast 7.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasmer-wast 7.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wasmer-wast 7.1.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a6220f33b8089ed83367d3b82d90881d82578b7850d29b91e924e137b6317bd
[INFO] running `Command { std: "docker" "start" "-a" "3a6220f33b8089ed83367d3b82d90881d82578b7850d29b91e924e137b6317bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a6220f33b8089ed83367d3b82d90881d82578b7850d29b91e924e137b6317bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6220f33b8089ed83367d3b82d90881d82578b7850d29b91e924e137b6317bd", kill_on_drop: false }`
[INFO] [stdout] 3a6220f33b8089ed83367d3b82d90881d82578b7850d29b91e924e137b6317bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2f3f591fb13f16cb21282b5e24ca696296c82e7039e02315a02509a6e48e8ee
[INFO] running `Command { std: "docker" "start" "-a" "f2f3f591fb13f16cb21282b5e24ca696296c82e7039e02315a02509a6e48e8ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
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[INFO] [stderr]    Compiling bumpalo v3.20.2
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[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling atomic-waker v1.1.2
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[INFO] [stderr]    Compiling virtual-mio v0.701.0
[INFO] [stderr]    Compiling wai-bindgen-rust-impl v0.2.3
[INFO] [stderr]    Compiling wasmer-compiler v7.1.0
[INFO] [stderr]    Compiling bincode_derive v2.0.1
[INFO] [stderr]    Compiling insta v1.47.0
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling webc v11.0.0
[INFO] [stderr]    Compiling wat v1.245.1
[INFO] [stderr]    Compiling wasmer-config v0.701.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.6
[INFO] [stderr]    Compiling wasmer-derive v7.1.0
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling unty v0.0.4
[INFO] [stderr]    Compiling managed v0.8.0
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling openssl-probe v0.2.1
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling rustls-native-certs v0.8.3
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stdout] error: wasmer requires enabling at least one backend feature: `singlepass`, `cranelift`, `llvm`, `wamr`, `wasmi`, `v8`, `js`, `jsc` or `headless`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/wasmer-7.1.0/src/lib.rs:445:1
[INFO] [stdout]     |
[INFO] [stdout] 445 | / compile_error!(
[INFO] [stdout] 446 | |     "wasmer requires enabling at least one backend feature: `singlepass`, `cranelift`, `llvm`, `wamr`, `wasmi`, `v8`, `js`, `jsc`...
[INFO] [stdout] 447 | | );
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the `sys` feature requires enabling at least one compiler backend: `singlepass`, `cranelift`, `llvm`, or `headless`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/wasmer-7.1.0/src/lib.rs:458:1
[INFO] [stdout]     |
[INFO] [stdout] 458 | / compile_error!(
[INFO] [stdout] 459 | |     "the `sys` feature requires enabling at least one compiler backend: `singlepass`, `cranelift`, `llvm`, or `headless`."
[INFO] [stdout] 460 | | );
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasmer` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f2f3f591fb13f16cb21282b5e24ca696296c82e7039e02315a02509a6e48e8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f3f591fb13f16cb21282b5e24ca696296c82e7039e02315a02509a6e48e8ee", kill_on_drop: false }`
[INFO] [stdout] f2f3f591fb13f16cb21282b5e24ca696296c82e7039e02315a02509a6e48e8ee