[INFO] cloning repository https://github.com/johnabs/stegr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnabs/stegr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnabs%2Fstegr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnabs%2Fstegr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed9038006ccd611454ec09bf87f852ef97fff761
[INFO] documenting johnabs/stegr 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%2Fjohnabs%2Fstegr" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnabs/stegr 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/johnabs/stegr
[INFO] finished tweaking git repo https://github.com/johnabs/stegr
[INFO] tweaked toml for git repo https://github.com/johnabs/stegr written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/johnabs/stegr 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]  Downloading crates ...
[INFO] [stderr]   Downloaded hex-literal-impl v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 0e61d16f4ceed2f9ad147913bfb306f6b06fa276d698eb3d8f671d82bd3a09dd
[INFO] running `Command { std: "docker" "start" "-a" "0e61d16f4ceed2f9ad147913bfb306f6b06fa276d698eb3d8f671d82bd3a09dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e61d16f4ceed2f9ad147913bfb306f6b06fa276d698eb3d8f671d82bd3a09dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e61d16f4ceed2f9ad147913bfb306f6b06fa276d698eb3d8f671d82bd3a09dd", kill_on_drop: false }`
[INFO] [stdout] 0e61d16f4ceed2f9ad147913bfb306f6b06fa276d698eb3d8f671d82bd3a09dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 9b837697f10c403d36d26036d6ef7cb30b40682bf70f2477f3856fd394757927
[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" "9b837697f10c403d36d26036d6ef7cb30b40682bf70f2477f3856fd394757927", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking base64 v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking block-modes v0.3.3
[INFO] [stderr]     Checking twofish v0.2.0
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]     Checking image v0.23.0
[INFO] [stderr]    Compiling hex-literal-impl v0.2.1
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]  Documenting stegr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unknown format trait `u8`
[INFO] [stdout]   --> src/encode.rs:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |         outstr = format!("{:u8}",) ;
[INFO] [stdout]    |                             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the only appropriate formatting traits are:
[INFO] [stdout]            - ``, which uses the `Display` trait
[INFO] [stdout]            - `?`, which uses the `Debug` trait
[INFO] [stdout]            - `e`, which uses the `LowerExp` trait
[INFO] [stdout]            - `E`, which uses the `UpperExp` trait
[INFO] [stdout]            - `o`, which uses the `Octal` trait
[INFO] [stdout]            - `p`, which uses the `Pointer` trait
[INFO] [stdout]            - `b`, which uses the `Binary` trait
[INFO] [stdout]            - `x`, which uses the `LowerHex` trait
[INFO] [stdout]            - `X`, which uses the `UpperHex` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 1 positional argument in format string, but no arguments were given
[INFO] [stdout]   --> src/encode.rs:83:27
[INFO] [stdout]    |
[INFO] [stdout] 83 |         outstr = format!("{:u8}",) ;
[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] [stderr] error: Could not document `stegr`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name stegr src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern aes=/opt/rustwide/target/debug/deps/libaes-2c7465d4c7a27a73.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-84106bb600c3c86d.rmeta --extern block_modes=/opt/rustwide/target/debug/deps/libblock_modes-63dd1356b0ab1fdd.rmeta --extern hex_literal=/opt/rustwide/target/debug/deps/libhex_literal-58c610cc9952475e.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-a4b3c6bedb26420a.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-915afbb154a8b0b0.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-eb88e4d2ab508438.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-dbac7e6f90909cd9.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-904a24f008268b04.rmeta --extern twofish=/opt/rustwide/target/debug/deps/libtwofish-f6fc338c67b4f82d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9b837697f10c403d36d26036d6ef7cb30b40682bf70f2477f3856fd394757927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b837697f10c403d36d26036d6ef7cb30b40682bf70f2477f3856fd394757927", kill_on_drop: false }`
[INFO] [stdout] 9b837697f10c403d36d26036d6ef7cb30b40682bf70f2477f3856fd394757927