[INFO] fetching crate rst_parser 0.4.0...
[INFO] checking rst_parser-0.4.0 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate rst_parser 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rst_parser 0.4.0 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rst_parser 0.4.0
[INFO] finished tweaking crates.io crate rst_parser 0.4.0
[INFO] tweaked toml for crates.io crate rst_parser 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c2901a64c6075f5f67a6a72e7c61f739fce2f1ade947d47d9436f5df41c20e1
[INFO] running `Command { std: "docker" "start" "-a" "5c2901a64c6075f5f67a6a72e7c61f739fce2f1ade947d47d9436f5df41c20e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c2901a64c6075f5f67a6a72e7c61f739fce2f1ade947d47d9436f5df41c20e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c2901a64c6075f5f67a6a72e7c61f739fce2f1ade947d47d9436f5df41c20e1", kill_on_drop: false }`
[INFO] [stdout] 5c2901a64c6075f5f67a6a72e7c61f739fce2f1ade947d47d9436f5df41c20e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bc645443b0ecb73d34ac431fcc4457fb3955ae39187e11fc341b4ae47bf7fc4
[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" "7bc645443b0ecb73d34ac431fcc4457fb3955ae39187e11fc341b4ae47bf7fc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking document_tree v0.4.0
[INFO] [stderr]     Checking rst_parser v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `NumberedFootnote`
[INFO] [stdout]   --> src/simplify.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     NumberedFootnote(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LabeledFootnote`
[INFO] [stdout]   --> src/simplify.rs:38:2
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LabeledFootnote(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Citation`
[INFO] [stdout]   --> src/simplify.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Citation,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InternalLink`
[INFO] [stdout]   --> src/simplify.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     InternalLink,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IndirectLink`
[INFO] [stdout]   --> src/simplify.rs:42:2
[INFO] [stdout]    |
[INFO] [stdout] 42 |     IndirectLink(NameToken),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SectionTitle`
[INFO] [stdout]   --> src/simplify.rs:43:2
[INFO] [stdout]    |
[INFO] [stdout] 43 |     SectionTitle,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_implicit_target`
[INFO] [stdout]   --> src/simplify.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn is_implicit_target(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NumberedFootnote`
[INFO] [stdout]   --> src/simplify.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     NumberedFootnote(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LabeledFootnote`
[INFO] [stdout]   --> src/simplify.rs:38:2
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LabeledFootnote(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Citation`
[INFO] [stdout]   --> src/simplify.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Citation,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InternalLink`
[INFO] [stdout]   --> src/simplify.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     InternalLink,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IndirectLink`
[INFO] [stdout]   --> src/simplify.rs:42:2
[INFO] [stdout]    |
[INFO] [stdout] 42 |     IndirectLink(NameToken),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SectionTitle`
[INFO] [stdout]   --> src/simplify.rs:43:2
[INFO] [stdout]    |
[INFO] [stdout] 43 |     SectionTitle,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_implicit_target`
[INFO] [stdout]   --> src/simplify.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn is_implicit_target(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "7bc645443b0ecb73d34ac431fcc4457fb3955ae39187e11fc341b4ae47bf7fc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc645443b0ecb73d34ac431fcc4457fb3955ae39187e11fc341b4ae47bf7fc4", kill_on_drop: false }`
[INFO] [stdout] 7bc645443b0ecb73d34ac431fcc4457fb3955ae39187e11fc341b4ae47bf7fc4