[INFO] fetching crate pallet-session 2.0.0-rc6...
[INFO] documenting pallet-session-2.0.0-rc6 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate pallet-session 2.0.0-rc6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate pallet-session 2.0.0-rc6 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pallet-session 2.0.0-rc6
[INFO] finished tweaking crates.io crate pallet-session 2.0.0-rc6
[INFO] tweaked toml for crates.io crate pallet-session 2.0.0-rc6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72b032997a8dc491702c82369d9c2ad62406227f8e44c313f73df23e896a2b64
[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" "72b032997a8dc491702c82369d9c2ad62406227f8e44c313f73df23e896a2b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72b032997a8dc491702c82369d9c2ad62406227f8e44c313f73df23e896a2b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b032997a8dc491702c82369d9c2ad62406227f8e44c313f73df23e896a2b64", kill_on_drop: false }`
[INFO] [stdout] 72b032997a8dc491702c82369d9c2ad62406227f8e44c313f73df23e896a2b64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc6678bd24db064d391373fc09d18844ef55ff3f7f8d8d6ec794ccf3cc824420
[INFO] running `Command { std: "docker" "start" "-a" "bc6678bd24db064d391373fc09d18844ef55ff3f7f8d8d6ec794ccf3cc824420", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking sp-std v2.0.0-rc6
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling parity-util-mem v0.7.0
[INFO] [stderr]     Checking hash-db v0.15.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking environmental v1.1.1
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking integer-sqrt v0.1.3
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking hash256-std-hasher v0.15.2
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking sp-panic-handler v2.0.0-rc6
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking trie-root v0.16.0
[INFO] [stderr]     Checking trie-db v0.22.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling sp-debug-derive v2.0.0-rc6
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling rental-impl v0.5.5
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.0
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling frame-support-procedural-tools-derive v2.0.0-rc6
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking dyn-clonable v0.9.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking ref-cast v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]     Checking tiny-bip39 v0.7.3
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking merlin v2.0.0
[INFO] [stderr]     Checking curve25519-dalek v2.1.0
[INFO] [stderr]     Checking curve25519-dalek v3.0.0
[INFO] [stderr]     Checking secrecy v0.6.0
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking schnorrkel v0.9.1
[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 -Cembed-bitcode=no -C debuginfo=2 -C metadata=de35ff3ea7c064a4 -C extra-filename=-de35ff3ea7c064a4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d3dc0cb999b3c41d.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-75a4c566bf65e716.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-f244793087233c22.rlib --extern proc_macro --cap-lints allow` (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" "bc6678bd24db064d391373fc09d18844ef55ff3f7f8d8d6ec794ccf3cc824420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc6678bd24db064d391373fc09d18844ef55ff3f7f8d8d6ec794ccf3cc824420", kill_on_drop: false }`
[INFO] [stdout] bc6678bd24db064d391373fc09d18844ef55ff3f7f8d8d6ec794ccf3cc824420