[INFO] cloning repository https://github.com/leshow/rust_mnemonic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leshow/rust_mnemonic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust_mnemonic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust_mnemonic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 698ab998972f881f23b2fa9e45819e744c9869c6
[INFO] documenting leshow/rust_mnemonic 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%2Fleshow%2Frust_mnemonic" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leshow/rust_mnemonic 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/leshow/rust_mnemonic
[INFO] finished tweaking git repo https://github.com/leshow/rust_mnemonic
[INFO] tweaked toml for git repo https://github.com/leshow/rust_mnemonic written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/leshow/rust_mnemonic 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v1.0.3
[INFO] [stderr]   Downloaded serde v1.0.55
[INFO] [stderr]   Downloaded serde_derive v1.0.55
[INFO] [stderr]   Downloaded syn v0.13.10
[INFO] [stderr]   Downloaded ring v0.14.6
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded spin v0.5.0
[INFO] [stderr]   Downloaded cc v1.0.30
[INFO] [stderr]   Downloaded serde_json v1.0.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 23bab3786ed20821121ee167d6a2715b81be8ea606ef592aea43a6dcd5900b93
[INFO] running `Command { std: "docker" "start" "-a" "23bab3786ed20821121ee167d6a2715b81be8ea606ef592aea43a6dcd5900b93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23bab3786ed20821121ee167d6a2715b81be8ea606ef592aea43a6dcd5900b93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23bab3786ed20821121ee167d6a2715b81be8ea606ef592aea43a6dcd5900b93", kill_on_drop: false }`
[INFO] [stdout] 23bab3786ed20821121ee167d6a2715b81be8ea606ef592aea43a6dcd5900b93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 5fe8b5d7348433af7fe37e53ea609aad29c622c06f6a02d545483c5ab08d5566
[INFO] running `Command { std: "docker" "start" "-a" "5fe8b5d7348433af7fe37e53ea609aad29c622c06f6a02d545483c5ab08d5566", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling cc v1.0.30
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking libc v0.2.50
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking rust_mnemonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust_mnemonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/mnemonic.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Io(ref err) => err.description(),
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/mnemonic.rs:134:35
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Serde(ref err) => err.description(),
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/settings.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Err(f) => panic!(f.to_string()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Err(f) => panic!("{}", f.to_string()),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.14s
[INFO] running `Command { std: "docker" "inspect" "5fe8b5d7348433af7fe37e53ea609aad29c622c06f6a02d545483c5ab08d5566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe8b5d7348433af7fe37e53ea609aad29c622c06f6a02d545483c5ab08d5566", kill_on_drop: false }`
[INFO] [stdout] 5fe8b5d7348433af7fe37e53ea609aad29c622c06f6a02d545483c5ab08d5566
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 3ec6a6d0cbaf3a556c49ae17b7a5ddd17e3a5a8a297d1f61c59e4a231572fc4b
[INFO] running `Command { std: "docker" "start" "-a" "3ec6a6d0cbaf3a556c49ae17b7a5ddd17e3a5a8a297d1f61c59e4a231572fc4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.30
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]  Documenting rust_mnemonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.11s
[INFO] running `Command { std: "docker" "inspect" "3ec6a6d0cbaf3a556c49ae17b7a5ddd17e3a5a8a297d1f61c59e4a231572fc4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec6a6d0cbaf3a556c49ae17b7a5ddd17e3a5a8a297d1f61c59e4a231572fc4b", kill_on_drop: false }`
[INFO] [stdout] 3ec6a6d0cbaf3a556c49ae17b7a5ddd17e3a5a8a297d1f61c59e4a231572fc4b