[INFO] cloning repository https://github.com/aranajhonny/private-lucet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aranajhonny/private-lucet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faranajhonny%2Fprivate-lucet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faranajhonny%2Fprivate-lucet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa8b968d40cf998845643ce02f1a40c098b139ff
[INFO] checking aranajhonny/private-lucet against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faranajhonny%2Fprivate-lucet" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aranajhonny/private-lucet on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aranajhonny/private-lucet
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/aranajhonny/private-lucet
[INFO] tweaked toml for git repo https://github.com/aranajhonny/private-lucet written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate git repo https://github.com/aranajhonny/private-lucet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2ac1d58efebc3507646eda3eb4fd0089fbdb4274d62479eb022410682798ab2
[INFO] running `Command { std: "docker" "start" "-a" "d2ac1d58efebc3507646eda3eb4fd0089fbdb4274d62479eb022410682798ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2ac1d58efebc3507646eda3eb4fd0089fbdb4274d62479eb022410682798ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2ac1d58efebc3507646eda3eb4fd0089fbdb4274d62479eb022410682798ab2", kill_on_drop: false }`
[INFO] [stdout] d2ac1d58efebc3507646eda3eb4fd0089fbdb4274d62479eb022410682798ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bbedc0a148856cb5e9ade0d454396b0360363075a03a1a64f56a71fef302482
[INFO] running `Command { std: "docker" "start" "-a" "3bbedc0a148856cb5e9ade0d454396b0360363075a03a1a64f56a71fef302482", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.4
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking wasmparser v0.39.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling cranelift-entity v0.44.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.44.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling cbindgen v0.9.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/wasmerio/inkwell?branch=llvm8-0#8f480124)
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking field-offset v0.1.1
[INFO] [stderr]     Checking kernel-net v0.1.0 (/opt/rustwide/workdir/lib/kernel-net)
[INFO] [stderr]     Checking plugin-for-example v0.1.0 (/opt/rustwide/workdir/examples/plugin-for-example)
[INFO] [stderr]    Compiling wasmer-wasi-tests v0.9.0 (/opt/rustwide/workdir/lib/wasi-tests)
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling wasmer-emscripten-tests v0.9.0 (/opt/rustwide/workdir/lib/emscripten-tests)
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.44.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking parallel-guest v0.1.0 (/opt/rustwide/workdir/examples/parallel-guest)
[INFO] [stderr]     Checking cranelift-bforest v0.44.0
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stdout] warning: function is never used: `print_char`
[INFO] [stdout]  --> examples/parallel-guest/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn print_char(c: u32);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_str`
[INFO] [stdout]  --> examples/parallel-guest/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_str(s: &str) {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_char`
[INFO] [stdout]  --> examples/parallel-guest/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn print_char(c: u32);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_str`
[INFO] [stdout]  --> examples/parallel-guest/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_str(s: &str) {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wabt-sys v0.7.0
[INFO] [stderr]    Compiling wasmer-win-exception-handler v0.9.0 (/opt/rustwide/workdir/lib/win-exception-handler)
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling enum-methods v0.0.8
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking blake2b_simd v0.5.8
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking page_size v0.4.1
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking wasmer-dev-utils v0.9.0 (/opt/rustwide/workdir/lib/dev-utils)
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking dynasmrt v0.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling wasmer-runtime-core v0.9.0 (/opt/rustwide/workdir/lib/runtime-core)
[INFO] [stderr]    Compiling cranelift-codegen v0.44.0
[INFO] [stderr]    Compiling llvm-sys v80.1.1
[INFO] [stderr]    Compiling wasmer-llvm-backend v0.9.0 (/opt/rustwide/workdir/lib/llvm-backend)
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=076708a4ce34ff26 -C extra-filename=-076708a4ce34ff26 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-cc21b70bcd0d70e5.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4b3576c28d065696.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-17df5e5ca0bb5bda.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3bbedc0a148856cb5e9ade0d454396b0360363075a03a1a64f56a71fef302482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bbedc0a148856cb5e9ade0d454396b0360363075a03a1a64f56a71fef302482", kill_on_drop: false }`
[INFO] [stdout] 3bbedc0a148856cb5e9ade0d454396b0360363075a03a1a64f56a71fef302482