[INFO] fetching crate swc_js_sourcemap 5.0.2...
[INFO] documenting swc_js_sourcemap-5.0.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate swc_js_sourcemap 5.0.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate swc_js_sourcemap 5.0.2 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 crates.io crate swc_js_sourcemap 5.0.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate swc_js_sourcemap 5.0.2
[INFO] tweaked toml for crates.io crate swc_js_sourcemap 5.0.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate swc_js_sourcemap 5.0.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] f217ec831c8152d7c8982654bde718b8b8bcf3ad7829cdb2888d4444fd113429
[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" "f217ec831c8152d7c8982654bde718b8b8bcf3ad7829cdb2888d4444fd113429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f217ec831c8152d7c8982654bde718b8b8bcf3ad7829cdb2888d4444fd113429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f217ec831c8152d7c8982654bde718b8b8bcf3ad7829cdb2888d4444fd113429", kill_on_drop: false }`
[INFO] [stdout] f217ec831c8152d7c8982654bde718b8b8bcf3ad7829cdb2888d4444fd113429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] f97e6505078f206569dfd8deb7a6a515015d73800ba8f9473e4bea6886a0407d
[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" "f97e6505078f206569dfd8deb7a6a515015d73800ba8f9473e4bea6886a0407d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking regex-syntax v0.6.15
[INFO] [stderr]     Checking if_chain v0.1.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]  Documenting swc_js_sourcemap v5.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/if_chain-0.1.3/src/lib.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         $then
[INFO] [stdout]     |         ^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.27s
[INFO] running `Command { std: "docker" "inspect" "f97e6505078f206569dfd8deb7a6a515015d73800ba8f9473e4bea6886a0407d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f97e6505078f206569dfd8deb7a6a515015d73800ba8f9473e4bea6886a0407d", kill_on_drop: false }`
[INFO] [stdout] f97e6505078f206569dfd8deb7a6a515015d73800ba8f9473e4bea6886a0407d