[INFO] cloning repository https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuk1ty/learning-systems-programming-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecae58c5a18ee0dcd33f602218de0b88e7570950
[INFO] documenting yuk1ty/learning-systems-programming-in-rust against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuk1ty/learning-systems-programming-in-rust on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] finished tweaking git repo https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] tweaked toml for git repo https://github.com/yuk1ty/learning-systems-programming-in-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/yuk1ty/learning-systems-programming-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] c37277f9f83e60a49a42a89985d179839bcc338f3504584d88fb72c2ca8e4c56
[INFO] running `Command { std: "docker" "start" "-a" "c37277f9f83e60a49a42a89985d179839bcc338f3504584d88fb72c2ca8e4c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c37277f9f83e60a49a42a89985d179839bcc338f3504584d88fb72c2ca8e4c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c37277f9f83e60a49a42a89985d179839bcc338f3504584d88fb72c2ca8e4c56", kill_on_drop: false }`
[INFO] [stdout] c37277f9f83e60a49a42a89985d179839bcc338f3504584d88fb72c2ca8e4c56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] fb041a62af13dc540d1e709e3557206b9009a9d52c2c94a3cc66908dee1ecee6
[INFO] running `Command { std: "docker" "start" "-a" "fb041a62af13dc540d1e709e3557206b9009a9d52c2c94a3cc66908dee1ecee6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling sysinfo v0.18.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking doc-comment v0.3.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]  Documenting lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]  Documenting chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6)
[INFO] [stderr]  Documenting chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17)
[INFO] [stderr]  Documenting chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12)
[INFO] [stderr]  Documenting chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5)
[INFO] [stderr]  Documenting chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9)
[INFO] [stderr]  Documenting chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15)
[INFO] [stderr]  Documenting chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8)
[INFO] [stderr]  Documenting chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14)
[INFO] [stderr]  Documenting appendix v0.1.0 (/opt/rustwide/workdir/appendix)
[INFO] [stderr]  Documenting chapter1 v0.1.0 (/opt/rustwide/workdir/chapter1)
[INFO] [stderr]  Documenting chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16)
[INFO] [stderr]  Documenting chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13)
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.21.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking memmap2 v0.2.2
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]  Documenting chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7)
[INFO] [stderr]  Documenting chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2)
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.72/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=7b9f4b481e4b675a -C extra-filename=-7b9f4b481e4b675a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8c71045510a6a3ac.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a74c599c4fe0a38c.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-11d097b41f2e60a4.rmeta --cap-lints allow --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.21.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=0df35a6424765682 -C extra-filename=-0df35a6424765682 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-de63b5279be8a244.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-483f5a2788925099.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-b2106559e686b889.rmeta --extern memoffset=/opt/rustwide/target/debug/deps/libmemoffset-712b8d1016d2c794.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "fb041a62af13dc540d1e709e3557206b9009a9d52c2c94a3cc66908dee1ecee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb041a62af13dc540d1e709e3557206b9009a9d52c2c94a3cc66908dee1ecee6", kill_on_drop: false }`
[INFO] [stdout] fb041a62af13dc540d1e709e3557206b9009a9d52c2c94a3cc66908dee1ecee6