[INFO] cloning repository https://github.com/SubstrateDevAcademy/v1-exercise-3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SubstrateDevAcademy/v1-exercise-3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 052ed68687af35abfe35c14d7227e2352c070082
[INFO] testing SubstrateDevAcademy/v1-exercise-3 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-3" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SubstrateDevAcademy/v1-exercise-3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SubstrateDevAcademy/v1-exercise-3
[INFO] finished tweaking git repo https://github.com/SubstrateDevAcademy/v1-exercise-3
[INFO] tweaked toml for git repo https://github.com/SubstrateDevAcademy/v1-exercise-3 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/SubstrateDevAcademy/v1-exercise-3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a66ea0e15da07fe90033c8a7dbd2d91a2eef458d44927ee148c062a9144cff0b
[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" "a66ea0e15da07fe90033c8a7dbd2d91a2eef458d44927ee148c062a9144cff0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a66ea0e15da07fe90033c8a7dbd2d91a2eef458d44927ee148c062a9144cff0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a66ea0e15da07fe90033c8a7dbd2d91a2eef458d44927ee148c062a9144cff0b", kill_on_drop: false }`
[INFO] [stdout] a66ea0e15da07fe90033c8a7dbd2d91a2eef458d44927ee148c062a9144cff0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db2e76492c1dd7f3c5a7e98e6e9e6bc3ea2123247a3057b6b1cfa0ebd3d322fb
[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" "db2e76492c1dd7f3c5a7e98e6e9e6bc3ea2123247a3057b6b1cfa0ebd3d322fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling wast v31.0.0
[INFO] [stderr]    Compiling node-template v2.0.1 (/opt/rustwide/workdir/node)
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling futures-macro v0.3.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling ref-cast-impl v1.0.6
[INFO] [stderr]    Compiling sp-debug-derive v2.0.1
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]    Compiling asn1_der_derive v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.69
[INFO] [stderr] error: could not compile `impl-trait-for-tuples`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name impl_trait_for_tuples --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/impl-trait-for-tuples-0.1.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=ad43dd8f3660e501 -C extra-filename=-ad43dd8f3660e501 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-17858077ac902bf7.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-6da9345f8173994c.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-9d73e3bd9316bfaf.rlib --extern proc_macro --cap-lints allow --cap-lints=warn` (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" "db2e76492c1dd7f3c5a7e98e6e9e6bc3ea2123247a3057b6b1cfa0ebd3d322fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2e76492c1dd7f3c5a7e98e6e9e6bc3ea2123247a3057b6b1cfa0ebd3d322fb", kill_on_drop: false }`
[INFO] [stdout] db2e76492c1dd7f3c5a7e98e6e9e6bc3ea2123247a3057b6b1cfa0ebd3d322fb