[INFO] cloning repository https://github.com/erikjohnston/rust-matrix-state
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erikjohnston/rust-matrix-state" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Frust-matrix-state", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Frust-matrix-state'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b817b15b83ee3f626367a0e2be48eab333cd4f3
[INFO] documenting erikjohnston/rust-matrix-state 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%2Ferikjohnston%2Frust-matrix-state" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erikjohnston/rust-matrix-state 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/erikjohnston/rust-matrix-state
[INFO] finished tweaking git repo https://github.com/erikjohnston/rust-matrix-state
[INFO] tweaked toml for git repo https://github.com/erikjohnston/rust-matrix-state written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/erikjohnston/rust-matrix-state 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 heapsize v0.4.2
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded procinfo v0.4.2
[INFO] [stderr]   Downloaded backtrace v0.3.6
[INFO] [stderr]   Downloaded arrayref v0.3.4
[INFO] [stderr]   Downloaded console v0.6.1
[INFO] [stderr]   Downloaded synstructure v0.5.2
[INFO] [stderr]   Downloaded parking_lot v0.5.4
[INFO] [stderr]   Downloaded cc v1.0.10
[INFO] [stderr]   Downloaded sha2 v0.7.0
[INFO] [stderr]   Downloaded md5 v0.3.7
[INFO] [stderr]   Downloaded fallible-iterator v0.1.4
[INFO] [stderr]   Downloaded postgres-shared v0.4.1
[INFO] [stderr]   Downloaded serde_derive v1.0.37
[INFO] [stderr]   Downloaded serde v1.0.37
[INFO] [stderr]   Downloaded digest v0.7.2
[INFO] [stderr]   Downloaded rustc_version v0.2.2
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.0
[INFO] [stderr]   Downloaded heapsize_derive v0.1.4
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded smallvec v0.6.0
[INFO] [stderr]   Downloaded socket2 v0.3.4
[INFO] [stderr]   Downloaded serde_json v1.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 38ea106be4a79cc3992dbd54824165cc6fe058824b5c183b48dafc0045baa52c
[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" "38ea106be4a79cc3992dbd54824165cc6fe058824b5c183b48dafc0045baa52c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38ea106be4a79cc3992dbd54824165cc6fe058824b5c183b48dafc0045baa52c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38ea106be4a79cc3992dbd54824165cc6fe058824b5c183b48dafc0045baa52c", kill_on_drop: false }`
[INFO] [stdout] 38ea106be4a79cc3992dbd54824165cc6fe058824b5c183b48dafc0045baa52c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 26b48f1b85c26eb39bd42cbca3955f203bc78c20f7d13482349b6e28d791b6bb
[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" "26b48f1b85c26eb39bd42cbca3955f203bc78c20f7d13482349b6e28d791b6bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking socket2 v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling synstructure v0.5.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]     Checking sha2 v0.7.0
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking parking_lot v0.5.4
[INFO] [stderr]    Compiling heapsize_derive v0.1.4
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[INFO] [stderr]     Checking postgres-shared v0.4.1
[INFO] [stderr]     Checking postgres v0.15.2
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]     Checking console v0.6.1
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]  Documenting rust-state v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/state_map.rs:365:41
[INFO] [stdout]     |
[INFO] [stdout] 365 |     fn from_iter<T: IntoIterator<Item = (((String, String), E))>>(iter: T) -> StateMap<E> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/state_map.rs:380:41
[INFO] [stdout]     |
[INFO] [stdout] 380 |     fn from_iter<T: IntoIterator<Item = (((&'a str, &'a str), E))>>(iter: T) -> StateMap<E> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.50s
[INFO] running `Command { std: "docker" "inspect" "26b48f1b85c26eb39bd42cbca3955f203bc78c20f7d13482349b6e28d791b6bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26b48f1b85c26eb39bd42cbca3955f203bc78c20f7d13482349b6e28d791b6bb", kill_on_drop: false }`
[INFO] [stdout] 26b48f1b85c26eb39bd42cbca3955f203bc78c20f7d13482349b6e28d791b6bb