[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 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnabs%2Fstegr" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnabs/stegr 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/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-38/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" "+1.61.0" "fetch" "--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 image v0.23.0
[INFO] [stderr]   Downloaded base64 v0.2.1
[INFO] [stderr]   Downloaded block-modes v0.3.3
[INFO] [stderr]   Downloaded hex-literal-impl v0.2.1
[INFO] [stderr]   Downloaded twofish v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] [stdout] 46ca7e794f79b7b9938f7c64a11185d5705282420a2bd83da30458d0a5066383
[INFO] running `Command { std: "docker" "start" "-a" "46ca7e794f79b7b9938f7c64a11185d5705282420a2bd83da30458d0a5066383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46ca7e794f79b7b9938f7c64a11185d5705282420a2bd83da30458d0a5066383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46ca7e794f79b7b9938f7c64a11185d5705282420a2bd83da30458d0a5066383", kill_on_drop: false }`
[INFO] [stdout] 46ca7e794f79b7b9938f7c64a11185d5705282420a2bd83da30458d0a5066383
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] [stdout] 1a0f0a2b1046c0994e9e7bbd837d44723725d6b75f96124e712e5586f8454e6c
[INFO] running `Command { std: "docker" "start" "-a" "1a0f0a2b1046c0994e9e7bbd837d44723725d6b75f96124e712e5586f8454e6c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]     Checking base64 v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[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 rayon v1.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]    Compiling structopt-derive 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]     Checking structopt v0.2.18
[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,artifacts,future-incompat --document-private-items -C metadata=2399fe18fdbd36bb -L dependency=/opt/rustwide/target/debug/deps --extern aes=/opt/rustwide/target/debug/deps/libaes-6e27218dd28479a6.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-ff3d9c173bbba952.rmeta --extern block_modes=/opt/rustwide/target/debug/deps/libblock_modes-143deef40d04c23b.rmeta --extern hex_literal=/opt/rustwide/target/debug/deps/libhex_literal-f833255bd11620b4.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-71d4a165a3320794.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-e5549dd9882595b3.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-eb2485b0b244c029.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-bc7df31c3321946e.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-44e67be9f90b4188.rmeta --extern twofish=/opt/rustwide/target/debug/deps/libtwofish-71fc192114419562.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1a0f0a2b1046c0994e9e7bbd837d44723725d6b75f96124e712e5586f8454e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a0f0a2b1046c0994e9e7bbd837d44723725d6b75f96124e712e5586f8454e6c", kill_on_drop: false }`
[INFO] [stdout] 1a0f0a2b1046c0994e9e7bbd837d44723725d6b75f96124e712e5586f8454e6c