[INFO] cloning repository https://github.com/JoeHowarth/market_sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoeHowarth/market_sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoeHowarth%2Fmarket_sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoeHowarth%2Fmarket_sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25bdff2ee9f5eb5edb7359c89413cb9e5f03bb10
[INFO] documenting JoeHowarth/market_sim against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoeHowarth%2Fmarket_sim" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JoeHowarth/market_sim 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 git repo https://github.com/JoeHowarth/market_sim
[INFO] finished tweaking git repo https://github.com/JoeHowarth/market_sim
[INFO] tweaked toml for git repo https://github.com/JoeHowarth/market_sim written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/JoeHowarth/market_sim already has a lockfile, it will not be regenerated
[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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 7548e5bdb60140df536efa62527c8ad86828ef274e904bf4ceb47e5f1dd3cfac
[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" "7548e5bdb60140df536efa62527c8ad86828ef274e904bf4ceb47e5f1dd3cfac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7548e5bdb60140df536efa62527c8ad86828ef274e904bf4ceb47e5f1dd3cfac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7548e5bdb60140df536efa62527c8ad86828ef274e904bf4ceb47e5f1dd3cfac", kill_on_drop: false }`
[INFO] [stdout] 7548e5bdb60140df536efa62527c8ad86828ef274e904bf4ceb47e5f1dd3cfac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] af8ecd2c11a15041948e7b39ef92f8b83ac95958bb0ba3eb590699efb44fd76f
[INFO] running `Command { std: "docker" "start" "-a" "af8ecd2c11a15041948e7b39ef92f8b83ac95958bb0ba3eb590699efb44fd76f", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking linear-map v1.2.0
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]  Documenting market_sim1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(in_band_lifetimes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generators, cell_update)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `market_sim1`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name market_sim1 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-6604e08e0877dd85.rmeta --extern csv=/opt/rustwide/target/debug/deps/libcsv-1b0d50a389ff24cf.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-c12682abeb9af86f.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern linear_map=/opt/rustwide/target/debug/deps/liblinear_map-b6802557ef48b11e.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-dd637e51935b99fa.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-02779f67c1379ad9.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ab2605f116843417.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-b52d4bc297a1e47e.so --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "af8ecd2c11a15041948e7b39ef92f8b83ac95958bb0ba3eb590699efb44fd76f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af8ecd2c11a15041948e7b39ef92f8b83ac95958bb0ba3eb590699efb44fd76f", kill_on_drop: false }`
[INFO] [stdout] af8ecd2c11a15041948e7b39ef92f8b83ac95958bb0ba3eb590699efb44fd76f