[INFO] fetching crate done 0.0.0-reserve...
[INFO] documenting done-0.0.0-reserve against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate done 0.0.0-reserve into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate done 0.0.0-reserve 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 crates.io crate done 0.0.0-reserve
[INFO] finished tweaking crates.io crate done 0.0.0-reserve
[INFO] tweaked toml for crates.io crate done 0.0.0-reserve written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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" "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] 9ce46ceebdf1960c1bef404ed3756a9e60585dd15a4dbafa99d9bbcecf9d0c16
[INFO] running `Command { std: "docker" "start" "-a" "9ce46ceebdf1960c1bef404ed3756a9e60585dd15a4dbafa99d9bbcecf9d0c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ce46ceebdf1960c1bef404ed3756a9e60585dd15a4dbafa99d9bbcecf9d0c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ce46ceebdf1960c1bef404ed3756a9e60585dd15a4dbafa99d9bbcecf9d0c16", kill_on_drop: false }`
[INFO] [stdout] 9ce46ceebdf1960c1bef404ed3756a9e60585dd15a4dbafa99d9bbcecf9d0c16
[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" "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] edeff21251ae6327d7f7a6a5a71d1b278d093e8da19608ea9bbb2e950cd73430
[INFO] running `Command { std: "docker" "start" "-a" "edeff21251ae6327d7f7a6a5a71d1b278d093e8da19608ea9bbb2e950cd73430", kill_on_drop: false }`
[INFO] [stderr]  Documenting done v0.0.0-reserve (/opt/rustwide/workdir)
[INFO] [stderr]     Checking done v0.0.0-reserve (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/task/task.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let state = try!(TaskState::from_char(main_line_chars.next().unwrap()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task/task.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 37 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/task/task.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let description = self.description();
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.12s
[INFO] running `Command { std: "docker" "inspect" "edeff21251ae6327d7f7a6a5a71d1b278d093e8da19608ea9bbb2e950cd73430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edeff21251ae6327d7f7a6a5a71d1b278d093e8da19608ea9bbb2e950cd73430", kill_on_drop: false }`
[INFO] [stdout] edeff21251ae6327d7f7a6a5a71d1b278d093e8da19608ea9bbb2e950cd73430
[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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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] 3ce799a4dfe842e80d4a9c462812e9e2dd320fe60312e2f738785ee1aae65cbc
[INFO] running `Command { std: "docker" "start" "-a" "3ce799a4dfe842e80d4a9c462812e9e2dd320fe60312e2f738785ee1aae65cbc", kill_on_drop: false }`
[INFO] [stderr]  Documenting done v0.0.0-reserve (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "3ce799a4dfe842e80d4a9c462812e9e2dd320fe60312e2f738785ee1aae65cbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ce799a4dfe842e80d4a9c462812e9e2dd320fe60312e2f738785ee1aae65cbc", kill_on_drop: false }`
[INFO] [stdout] 3ce799a4dfe842e80d4a9c462812e9e2dd320fe60312e2f738785ee1aae65cbc