[INFO] cloning repository https://github.com/hgentry/euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hgentry/euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgentry%2Feuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgentry%2Feuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f23f520d8658f312214641f5f5b601460e946eb4
[INFO] documenting hgentry/euler against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgentry%2Feuler" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgentry/euler on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hgentry/euler
[INFO] finished tweaking git repo https://github.com/hgentry/euler
[INFO] tweaked toml for git repo https://github.com/hgentry/euler written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/hgentry/euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.6.0
[INFO] [stderr]   Downloaded ord_subset v3.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2020-08-29" "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] a9b842d6a664092c8e13e9dcb9209952241618202b1f3d0abc63f9a77ebfdc2d
[INFO] running `Command { std: "docker" "start" "-a" "a9b842d6a664092c8e13e9dcb9209952241618202b1f3d0abc63f9a77ebfdc2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9b842d6a664092c8e13e9dcb9209952241618202b1f3d0abc63f9a77ebfdc2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9b842d6a664092c8e13e9dcb9209952241618202b1f3d0abc63f9a77ebfdc2d", kill_on_drop: false }`
[INFO] [stdout] a9b842d6a664092c8e13e9dcb9209952241618202b1f3d0abc63f9a77ebfdc2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2020-08-29" "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] 5c27add2367ec6260557aefa3d2451b21b33c67d38df5d1f4cff83b36bc89559
[INFO] running `Command { std: "docker" "start" "-a" "5c27add2367ec6260557aefa3d2451b21b33c67d38df5d1f4cff83b36bc89559", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking ord_subset v3.1.0
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]  Documenting euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/problems/p13.rs:140:40
[INFO] [stdout]     |
[INFO] [stdout] 140 |     return result.parse::<i64>().unwrap();;
[INFO] [stdout]     |                                           ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/problems/p37.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if(left_truncatable(p)) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problems/p615.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |             else {;
[INFO] [stdout]    |                   ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.29s
[INFO] running `Command { std: "docker" "inspect" "5c27add2367ec6260557aefa3d2451b21b33c67d38df5d1f4cff83b36bc89559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c27add2367ec6260557aefa3d2451b21b33c67d38df5d1f4cff83b36bc89559", kill_on_drop: false }`
[INFO] [stdout] 5c27add2367ec6260557aefa3d2451b21b33c67d38df5d1f4cff83b36bc89559