[INFO] cloning repository https://github.com/TommyPujol06/rust-ssh-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TommyPujol06/rust-ssh-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTommyPujol06%2Frust-ssh-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTommyPujol06%2Frust-ssh-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2c886bccbf3dee3d0f399b3fdd2d7bcd860cd1d
[INFO] documenting TommyPujol06/rust-ssh-chat 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%2FTommyPujol06%2Frust-ssh-chat" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TommyPujol06/rust-ssh-chat 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] removed /workspace/builds/worker-32/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/TommyPujol06/rust-ssh-chat
[INFO] finished tweaking git repo https://github.com/TommyPujol06/rust-ssh-chat
[INFO] tweaked toml for git repo https://github.com/TommyPujol06/rust-ssh-chat written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/TommyPujol06/rust-ssh-chat 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 anyhow v1.0.41
[INFO] [stderr]   Downloaded cryptovec v0.6.1
[INFO] [stderr]   Downloaded yasna v0.4.0
[INFO] [stderr]   Downloaded thrussh-libsodium v0.2.1
[INFO] [stderr]   Downloaded tokio v1.6.1
[INFO] [stderr]   Downloaded thrussh v0.32.10
[INFO] [stderr]   Downloaded thrussh-keys v0.20.6
[INFO] [stderr]   Downloaded libsodium-sys v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] 45b19cdab5f961d86f789acc1222ce1410b77c8081cac154740805c710ac4a37
[INFO] running `Command { std: "docker" "start" "-a" "45b19cdab5f961d86f789acc1222ce1410b77c8081cac154740805c710ac4a37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45b19cdab5f961d86f789acc1222ce1410b77c8081cac154740805c710ac4a37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45b19cdab5f961d86f789acc1222ce1410b77c8081cac154740805c710ac4a37", kill_on_drop: false }`
[INFO] [stdout] 45b19cdab5f961d86f789acc1222ce1410b77c8081cac154740805c710ac4a37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] e77226ddb93b7212fd3e13417e160761b075e140845cd4e1f00c4839e6348b3f
[INFO] running `Command { std: "docker" "start" "-a" "e77226ddb93b7212fd3e13417e160761b075e140845cd4e1f00c4839e6348b3f", 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]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling libsodium-sys v0.2.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking cryptovec v0.6.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking yasna v0.4.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking thrussh-libsodium v0.2.1
[INFO] [stderr]     Checking thrussh-keys v0.20.6
[INFO] [stderr]     Checking thrussh v0.32.10
[INFO] [stderr]  Documenting ssh_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(duration_constants)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ssh_chat`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ssh_chat src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0e584fd68593acfb -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d04bc6234597c37f.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-9ede374be8320dfe.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-753fd9291a29a818.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-cc9cbba241e4fb78.rmeta --extern thrussh=/opt/rustwide/target/debug/deps/libthrussh-4b2b647872bd2d26.rmeta --extern thrussh_keys=/opt/rustwide/target/debug/deps/libthrussh_keys-5ec6fdaf755f0eb7.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-a2fb27091b4ebb4d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e77226ddb93b7212fd3e13417e160761b075e140845cd4e1f00c4839e6348b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e77226ddb93b7212fd3e13417e160761b075e140845cd4e1f00c4839e6348b3f", kill_on_drop: false }`
[INFO] [stdout] e77226ddb93b7212fd3e13417e160761b075e140845cd4e1f00c4839e6348b3f