[INFO] fetching crate magic-wormhole 0.0.2...
[INFO] documenting magic-wormhole-0.0.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate magic-wormhole 0.0.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate magic-wormhole 0.0.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate magic-wormhole 0.0.2
[INFO] finished tweaking crates.io crate magic-wormhole 0.0.2
[INFO] tweaked toml for crates.io crate magic-wormhole 0.0.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate magic-wormhole 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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] 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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e363b55cd1016bc756645ae618592427c5c833bf1d921d4a1914eb9a036af23
[INFO] running `Command { std: "docker" "start" "-a" "9e363b55cd1016bc756645ae618592427c5c833bf1d921d4a1914eb9a036af23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e363b55cd1016bc756645ae618592427c5c833bf1d921d4a1914eb9a036af23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e363b55cd1016bc756645ae618592427c5c833bf1d921d4a1914eb9a036af23", kill_on_drop: false }`
[INFO] [stdout] 9e363b55cd1016bc756645ae618592427c5c833bf1d921d4a1914eb9a036af23
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4067d6bed22ae1f57f086da5b25ba2307d26dd587ef6d09d8083f6940c64f4b
[INFO] running `Command { std: "docker" "start" "-a" "c4067d6bed22ae1f57f086da5b25ba2307d26dd587ef6d09d8083f6940c64f4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling subtle v2.1.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking safemem v0.3.2
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking typenum v1.11.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling tar v0.4.26
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[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking c2-chacha v0.2.2
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[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking mio-extras v2.0.5
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[INFO] [stderr]    Compiling clear_on_drop v0.2.3
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[INFO] [stderr]    Compiling syn v1.0.5
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[INFO] [stderr]    Compiling libsodium-sys v0.2.2
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[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
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[INFO] [stderr]     Checking parking_lot v0.7.1
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[INFO] [stderr]     Checking tokio-timer v0.2.11
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[INFO] [stderr]     Checking hkdf v0.7.1
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[INFO] [stderr]     Checking tokio-codec v0.1.1
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[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
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[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking url v2.1.0
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[INFO] [stderr]     Checking tokio v0.1.22
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[INFO] [stderr]     Checking ws v0.9.0
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking spake2 v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking websocket v0.23.0
[INFO] [stderr]     Checking sodiumoxide v0.2.2
[INFO] [stderr]     Checking magic-wormhole v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting magic-wormhole v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused return value of `std::string::String::split_off` that must be used
[INFO] [stdout]   --> src/core/wordlist.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |                     suffix.split_off(p as usize);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `magic-wormhole`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c4067d6bed22ae1f57f086da5b25ba2307d26dd587ef6d09d8083f6940c64f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4067d6bed22ae1f57f086da5b25ba2307d26dd587ef6d09d8083f6940c64f4b", kill_on_drop: false }`
[INFO] [stdout] c4067d6bed22ae1f57f086da5b25ba2307d26dd587ef6d09d8083f6940c64f4b
