[INFO] cloning repository https://github.com/kRITZCREEK/wasm_exp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kRITZCREEK/wasm_exp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fwasm_exp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fwasm_exp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cb16620fd11983aba7fc2c8aa812a929c5c7e61
[INFO] checking kRITZCREEK/wasm_exp against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fwasm_exp" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kRITZCREEK/wasm_exp on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kRITZCREEK/wasm_exp
[INFO] finished tweaking git repo https://github.com/kRITZCREEK/wasm_exp
[INFO] tweaked toml for git repo https://github.com/kRITZCREEK/wasm_exp written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/kRITZCREEK/wasm_exp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.97
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded serde v1.0.97
[INFO] [stderr]   Downloaded cmake v0.1.40
[INFO] [stderr]   Downloaded parity-wasm v0.31.3
[INFO] [stderr]   Downloaded wasmi-validation v0.1.0
[INFO] [stderr]   Downloaded parity-wasm v0.39.0
[INFO] [stderr]   Downloaded wabt v0.8.0
[INFO] [stderr]   Downloaded wasmi v0.5.0
[INFO] [stderr]   Downloaded wabt-sys v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c56f2a0d15a11e8b1e82a4f1f25b433bbe5a6d4abf7b62038710a52add11044
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0c56f2a0d15a11e8b1e82a4f1f25b433bbe5a6d4abf7b62038710a52add11044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c56f2a0d15a11e8b1e82a4f1f25b433bbe5a6d4abf7b62038710a52add11044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c56f2a0d15a11e8b1e82a4f1f25b433bbe5a6d4abf7b62038710a52add11044", kill_on_drop: false }`
[INFO] [stdout] 0c56f2a0d15a11e8b1e82a4f1f25b433bbe5a6d4abf7b62038710a52add11044
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d223f4118de0e230d4eb4999809ff7bb2268dcc70eeec1d9790c21afaaeb27de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d223f4118de0e230d4eb4999809ff7bb2268dcc70eeec1d9790c21afaaeb27de", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]     Checking parity-wasm v0.39.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling wabt-sys v0.6.0
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking wasmi v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr] error: could not compile `serde_derive`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.97/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=6dea91ec38187874 -C extra-filename=-6dea91ec38187874 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-14b87d0cfb3a3067.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-3ab6671852ca27d4.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a954fc1768c2585f.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid` (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" "d223f4118de0e230d4eb4999809ff7bb2268dcc70eeec1d9790c21afaaeb27de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d223f4118de0e230d4eb4999809ff7bb2268dcc70eeec1d9790c21afaaeb27de", kill_on_drop: false }`
[INFO] [stdout] d223f4118de0e230d4eb4999809ff7bb2268dcc70eeec1d9790c21afaaeb27de