[INFO] fetching crate named_tuple 0.1.3...
[INFO] documenting named_tuple-0.1.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate named_tuple 0.1.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate named_tuple 0.1.3 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 named_tuple 0.1.3
[INFO] finished tweaking crates.io crate named_tuple 0.1.3
[INFO] tweaked toml for crates.io crate named_tuple 0.1.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.3.17
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v669.0.0
[INFO] [stderr]   Downloaded ena v0.14.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v669.0.0
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[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v669.0.0
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[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.19
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[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v669.0.0
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[INFO] [stderr]   Downloaded stacker v0.1.11
[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] dd74cf6332295a05bd42dd7c4276efb2c9725c325823ed19c67c04007df0d196
[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" "dd74cf6332295a05bd42dd7c4276efb2c9725c325823ed19c67c04007df0d196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd74cf6332295a05bd42dd7c4276efb2c9725c325823ed19c67c04007df0d196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd74cf6332295a05bd42dd7c4276efb2c9725c325823ed19c67c04007df0d196", kill_on_drop: false }`
[INFO] [stdout] dd74cf6332295a05bd42dd7c4276efb2c9725c325823ed19c67c04007df0d196
[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] 59de9978abbb912b0034adbe33848a67e7d6c941ff4b5a9fc4dc0fb6cc1e3486
[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" "59de9978abbb912b0034adbe33848a67e7d6c941ff4b5a9fc4dc0fb6cc1e3486", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]  Documenting named_tuple v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]     --> src/lib.rs:1003:29
[INFO] [stdout]      |
[INFO] [stdout] 1003 |             s.field("type", { &quote!(#ty).to_string() });
[INFO] [stdout]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]     --> src/lib.rs:1007:32
[INFO] [stdout]      |
[INFO] [stdout] 1007 |             s.field("default", { &quote!(#value).to_string() });
[INFO] [stdout]      |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "59de9978abbb912b0034adbe33848a67e7d6c941ff4b5a9fc4dc0fb6cc1e3486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59de9978abbb912b0034adbe33848a67e7d6c941ff4b5a9fc4dc0fb6cc1e3486", kill_on_drop: false }`
[INFO] [stdout] 59de9978abbb912b0034adbe33848a67e7d6c941ff4b5a9fc4dc0fb6cc1e3486