[INFO] fetching crate solana-ledger-tool 0.20.5...
[INFO] documenting solana-ledger-tool-0.20.5 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate solana-ledger-tool 0.20.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate solana-ledger-tool 0.20.5 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate solana-ledger-tool 0.20.5
[INFO] finished tweaking crates.io crate solana-ledger-tool 0.20.5
[INFO] tweaked toml for crates.io crate solana-ledger-tool 0.20.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate solana-ledger-tool 0.20.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", 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] cbece272c0cb2cf539dfe7800a8608e8409a3b9cd0b7ea6ecf6dd8f098a6c347
[INFO] running `Command { std: "docker" "start" "-a" "cbece272c0cb2cf539dfe7800a8608e8409a3b9cd0b7ea6ecf6dd8f098a6c347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbece272c0cb2cf539dfe7800a8608e8409a3b9cd0b7ea6ecf6dd8f098a6c347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbece272c0cb2cf539dfe7800a8608e8409a3b9cd0b7ea6ecf6dd8f098a6c347", kill_on_drop: false }`
[INFO] [stdout] cbece272c0cb2cf539dfe7800a8608e8409a3b9cd0b7ea6ecf6dd8f098a6c347
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea8b57df712e6a198b08070b90e6aca3b01f2a1c529c6ce52b5339864bd4a68
[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" "1ea8b57df712e6a198b08070b90e6aca3b01f2a1c529c6ce52b5339864bd4a68", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling subtle v2.2.1
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stderr]     Checking bs58 v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]    Compiling bindgen v0.49.2
[INFO] [stderr]     Checking fs_extra v1.1.0
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking unicode-normalization v0.1.10
[INFO] [stderr]     Checking bloom v0.3.2
[INFO] [stderr]    Compiling bv v0.11.0
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking proc-macro2 v1.0.6
[INFO] [stderr]     Checking dir-diff v0.3.2
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking ar v0.6.2
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling enum-primitive-derive v0.1.2
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking jobserver v0.1.17
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking cc v1.0.47
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking solana-logger v0.20.5
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling sys-info v0.5.8
[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 --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"' -C metadata=ace11518711cf0b7 -C extra-filename=-ace11518711cf0b7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-97ca7e870c384a1c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-87494921952c675b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-be8312600acc46f1.rmeta --cap-lints allow --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 --cfg syn_disable_nightly_tests` (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" "1ea8b57df712e6a198b08070b90e6aca3b01f2a1c529c6ce52b5339864bd4a68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea8b57df712e6a198b08070b90e6aca3b01f2a1c529c6ce52b5339864bd4a68", kill_on_drop: false }`
[INFO] [stdout] 1ea8b57df712e6a198b08070b90e6aca3b01f2a1c529c6ce52b5339864bd4a68
