[INFO] cloning repository https://github.com/dustlang/chalk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dustlang/chalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdustlang%2Fchalk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdustlang%2Fchalk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fbfa00e831a12eae33f1dd56b705655ded3bc42b
[INFO] documenting dustlang/chalk against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdustlang%2Fchalk" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dustlang/chalk on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dustlang/chalk
[INFO] finished tweaking git repo https://github.com/dustlang/chalk
[INFO] tweaked toml for git repo https://github.com/dustlang/chalk written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/dustlang/chalk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b43863db065d3abd6e67be8298ea845ea1a034b7825c1b6df26155842cdac4c1
[INFO] running `Command { std: "docker" "start" "-a" "b43863db065d3abd6e67be8298ea845ea1a034b7825c1b6df26155842cdac4c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b43863db065d3abd6e67be8298ea845ea1a034b7825c1b6df26155842cdac4c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43863db065d3abd6e67be8298ea845ea1a034b7825c1b6df26155842cdac4c1", kill_on_drop: false }`
[INFO] [stdout] b43863db065d3abd6e67be8298ea845ea1a034b7825c1b6df26155842cdac4c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1509c757bd711aaf504923d1895cc67820067cabe54f1a39a5294f93431bb714
[INFO] running `Command { std: "docker" "start" "-a" "1509c757bd711aaf504923d1895cc67820067cabe54f1a39a5294f93431bb714", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]     Checking tracing-core v0.1.14
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking lalrpop-util v0.19.0
[INFO] [stderr]     Checking rustyline v7.1.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.10
[INFO] [stderr]    Compiling chalk-derive v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-derive)
[INFO] [stderr]    Compiling salsa-macros v0.16.0
[INFO] [stderr]     Checking chalk-ir v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-ir)
[INFO] [stdout] warning: 2nd rule of macro `reflexive_impl` is never used
[INFO] [stdout]   --> chalk-ir/src/cast.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     ($u:ty) => {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macro_rules)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking salsa v0.16.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]     Checking tracing-subscriber v0.2.11
[INFO] [stderr]    Compiling lalrpop v0.19.0
[INFO] [stderr]     Checking tracing-tree v0.1.5
[INFO] [stderr]     Checking chalk-solve v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-solve)
[INFO] [stdout] warning: 2nd rule of macro `write_flags` is never used
[INFO] [stdout]   --> chalk-solve/src/display/items.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     (@default $n:ident : $name:literal) => {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macro_rules)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_universe`
[INFO] [stdout]   --> chalk-solve/src/infer/canonicalize.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     max_universe: UniverseIndex,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Canonicalized` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> chalk-solve/src/infer/canonicalize.rs:57:10
[INFO] [stdout]    |
[INFO] [stdout] 57 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking chalk-recursive v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-recursive)
[INFO] [stderr]     Checking chalk-engine v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-engine)
[INFO] [stderr]    Compiling chalk-parse v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-parse)
[INFO] [stderr]     Checking chalk-integration v0.61.0-dev.0 (/opt/rustwide/workdir/chalk-integration)
[INFO] [stderr]  Documenting chalk v0.61.0-dev.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 01s
[INFO] running `Command { std: "docker" "inspect" "1509c757bd711aaf504923d1895cc67820067cabe54f1a39a5294f93431bb714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1509c757bd711aaf504923d1895cc67820067cabe54f1a39a5294f93431bb714", kill_on_drop: false }`
[INFO] [stdout] 1509c757bd711aaf504923d1895cc67820067cabe54f1a39a5294f93431bb714
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 698d1a55e10e991fa409c22237fa7ff55e177e28f0fee4cbc82b557ecf4f342c
[INFO] running `Command { std: "docker" "start" "-a" "698d1a55e10e991fa409c22237fa7ff55e177e28f0fee4cbc82b557ecf4f342c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: no library targets found in package `chalk`
[INFO] running `Command { std: "docker" "inspect" "698d1a55e10e991fa409c22237fa7ff55e177e28f0fee4cbc82b557ecf4f342c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "698d1a55e10e991fa409c22237fa7ff55e177e28f0fee4cbc82b557ecf4f342c", kill_on_drop: false }`
[INFO] [stdout] 698d1a55e10e991fa409c22237fa7ff55e177e28f0fee4cbc82b557ecf4f342c