[INFO] cloning repository https://github.com/kalvatn/advent-of-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kalvatn/advent-of-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalvatn%2Fadvent-of-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalvatn%2Fadvent-of-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cefe28d3bc4cadd0d67275402f73776a9a4f930d
[INFO] documenting kalvatn/advent-of-rust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalvatn%2Fadvent-of-rust" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kalvatn/advent-of-rust on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kalvatn/advent-of-rust
[INFO] finished tweaking git repo https://github.com/kalvatn/advent-of-rust
[INFO] tweaked toml for git repo https://github.com/kalvatn/advent-of-rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kalvatn/advent-of-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.3.1
[INFO] [stderr]   Downloaded num-complex v0.3.1
[INFO] [stderr]   Downloaded syn v1.0.53
[INFO] [stderr]   Downloaded num-bigint v0.3.1
[INFO] [stderr]   Downloaded serde_scan v0.4.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 611e1eb32d1bb8e7efff850c31f959a24d68d661711ed47634c22d4065dd2edf
[INFO] running `Command { std: "docker" "start" "-a" "611e1eb32d1bb8e7efff850c31f959a24d68d661711ed47634c22d4065dd2edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "611e1eb32d1bb8e7efff850c31f959a24d68d661711ed47634c22d4065dd2edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "611e1eb32d1bb8e7efff850c31f959a24d68d661711ed47634c22d4065dd2edf", kill_on_drop: false }`
[INFO] [stdout] 611e1eb32d1bb8e7efff850c31f959a24d68d661711ed47634c22d4065dd2edf
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 2faa4537a597829264bee2d232c0ceb9b4f58c5204db6746f57d2aafdddc863d
[INFO] running `Command { std: "docker" "start" "-a" "2faa4537a597829264bee2d232c0ceb9b4f58c5204db6746f57d2aafdddc863d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]     Checking primes v0.3.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking encoding_rs v0.8.26
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking mime_guess v2.0.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking net2 v0.2.36
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking socket2 v0.3.17
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_scan v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.9
[INFO] [stderr]  Documenting advent-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking advent-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2020_02 src/bin/2020/02.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=32c5236514f2f8f7 -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2020_17 src/bin/2020/17.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b2f1d37933d5c690 -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2020_12 src/bin/2020/12.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9cd6323ef2010d88 -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2015_10 src/bin/2015/10.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=85f0ccbb9153177f -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2020_16 src/bin/2020/16.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=58a51154c516fb34 -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2015_04 src/bin/2015/04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3b8a59c3dae75f8a -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2015_01 src/bin/2015/01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=17ed52c4cbe83d5f -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2015_13 src/bin/2015/13.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2de87dbedba12dae -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2020_04 src/bin/2020/04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f97ceadb40f22522 -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `advent-of-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2015_12 src/bin/2015/12.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=61eb8c7639f4cabc -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-90d4941c810243a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-048588c9e4b7f01d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-05cdc6da942a1386.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-9908d5eb3e56abda.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-88ec62a25babc23c.rmeta --extern primes=/opt/rustwide/target/debug/deps/libprimes-9dbb94f953b24121.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a5357ea416ca97a3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d048edb9e1fa474.rmeta --extern serde_scan=/opt/rustwide/target/debug/deps/libserde_scan-6dfa451e1cf10cb4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9570c8dbd241e1f4.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "2faa4537a597829264bee2d232c0ceb9b4f58c5204db6746f57d2aafdddc863d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2faa4537a597829264bee2d232c0ceb9b4f58c5204db6746f57d2aafdddc863d", kill_on_drop: false }`
[INFO] [stdout] 2faa4537a597829264bee2d232c0ceb9b4f58c5204db6746f57d2aafdddc863d