[INFO] cloning repository https://github.com/wasmerio/ewasm-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wasmerio/ewasm-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasmerio%2Fewasm-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasmerio%2Fewasm-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1ccbd6e6d792889d49a8f9c272f21b8a158e186
[INFO] testing wasmerio/ewasm-workshop against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasmerio%2Fewasm-workshop" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wasmerio/ewasm-workshop 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 git repo https://github.com/wasmerio/ewasm-workshop
[INFO] finished tweaking git repo https://github.com/wasmerio/ewasm-workshop
[INFO] tweaked toml for git repo https://github.com/wasmerio/ewasm-workshop written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/wasmerio/ewasm-workshop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/wasmerio/wasmer`
[INFO] [stderr]     Updating git submodule `https://github.com/wasmerio/wapm-cli.git`
[INFO] [stderr] warning: invalid character `:` in feature `backend:llvm` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr] warning: invalid character `:` in feature `backend:singlepass` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr] warning: invalid character `:` in feature `loader:kernel` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr]     Updating git repository `https://github.com/wasmerio/cranelift.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest v0.8.0
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded nom v4.2.0
[INFO] [stderr]   Downloaded bindgen v0.46.0
[INFO] [stderr]   Downloaded page_size v0.4.1
[INFO] [stderr]   Downloaded serde_bytes v0.10.5
[INFO] [stderr]   Downloaded dynasm v0.3.2
[INFO] [stderr]   Downloaded dynasmrt v0.3.1
[INFO] [stderr]   Downloaded blake2b_simd v0.4.1
[INFO] [stderr]   Downloaded wasmparser v0.29.2
[INFO] [stderr]   Downloaded target-lexicon v0.4.0
[INFO] [stderr]   Downloaded raw-cpuid v6.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 135f18948f6293b8ff4ebbd76ead738c86757a769810bcc49200fc67a44c6825
[INFO] running `Command { std: "docker" "start" "-a" "135f18948f6293b8ff4ebbd76ead738c86757a769810bcc49200fc67a44c6825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "135f18948f6293b8ff4ebbd76ead738c86757a769810bcc49200fc67a44c6825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135f18948f6293b8ff4ebbd76ead738c86757a769810bcc49200fc67a44c6825", kill_on_drop: false }`
[INFO] [stdout] 135f18948f6293b8ff4ebbd76ead738c86757a769810bcc49200fc67a44c6825
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 21442367ea71d7a5a3456c983fee0ed1a1d748bb3229bcf403493ed2bc75913b
[INFO] running `Command { std: "docker" "start" "-a" "21442367ea71d7a5a3456c983fee0ed1a1d748bb3229bcf403493ed2bc75913b", kill_on_drop: false }`
[INFO] [stderr] warning: invalid character `:` in feature `backend:llvm` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr] warning: invalid character `:` in feature `backend:singlepass` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr] warning: invalid character `:` in feature `loader:kernel` in package wasmer v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134), characters must be Unicode XID characters, `+`, or `.` (numbers, `+`, `-`, `_`, `.`, or most letters)
[INFO] [stderr] This was previously accepted but is being phased out; it will become a hard error in a future release.
[INFO] [stderr] For more information, see issue #8813 <https://github.com/rust-lang/cargo/issues/8813>, and please leave a comment if this will be a problem for your project.
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling byteorder v1.3.0
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling cranelift-entity v0.30.0 (https://github.com/wasmerio/cranelift.git?rev=84ec31b0fdfc10db491ef950815ee2961db057cb#84ec31b0)
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling wasmparser v0.29.2
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.30.0 (https://github.com/wasmerio/cranelift.git?rev=84ec31b0fdfc10db491ef950815ee2961db057cb#84ec31b0)
[INFO] [stderr]    Compiling cranelift-bforest v0.30.0 (https://github.com/wasmerio/cranelift.git?rev=84ec31b0fdfc10db491ef950815ee2961db057cb#84ec31b0)
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling blake2b_simd v0.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling page_size v0.4.1
[INFO] [stderr]    Compiling errno v0.2.4
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling dynasmrt v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling wasmer-runtime-core v0.4.2 (https://github.com/wasmerio/wasmer?branch=master#5db8c134)
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.36
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stderr]    Compiling serde-bench v0.0.7
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling cranelift-codegen v0.30.0 (https://github.com/wasmerio/cranelift.git?rev=84ec31b0fdfc10db491ef950815ee2961db057cb#84ec31b0)
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling target-lexicon v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling dynasm v0.3.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dynasm-0.3.2/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dynasm-0.3.2/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dynasm` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "21442367ea71d7a5a3456c983fee0ed1a1d748bb3229bcf403493ed2bc75913b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21442367ea71d7a5a3456c983fee0ed1a1d748bb3229bcf403493ed2bc75913b", kill_on_drop: false }`
[INFO] [stdout] 21442367ea71d7a5a3456c983fee0ed1a1d748bb3229bcf403493ed2bc75913b