[INFO] fetching crate rustdoc-index 0.7.1...
[INFO] checking rustdoc-index-0.7.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rustdoc-index 0.7.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rustdoc-index 0.7.1
[INFO] finished tweaking crates.io crate rustdoc-index 0.7.1
[INFO] tweaked toml for crates.io crate rustdoc-index 0.7.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustdoc-index 0.7.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustdoc-index 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7598248a89279fbf4d3e692302ab3117ae1cb813b9e56dd25d3138e3189fe333
[INFO] running `Command { std: "docker" "start" "-a" "7598248a89279fbf4d3e692302ab3117ae1cb813b9e56dd25d3138e3189fe333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7598248a89279fbf4d3e692302ab3117ae1cb813b9e56dd25d3138e3189fe333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7598248a89279fbf4d3e692302ab3117ae1cb813b9e56dd25d3138e3189fe333", kill_on_drop: false }`
[INFO] [stdout] 7598248a89279fbf4d3e692302ab3117ae1cb813b9e56dd25d3138e3189fe333
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 686bf00de046074f16af082d1bd8ec2b12a1c2b4bf184abd5d20e47b3c0512f7
[INFO] running `Command { std: "docker" "start" "-a" "686bf00de046074f16af082d1bd8ec2b12a1c2b4bf184abd5d20e47b3c0512f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde_derive v1.0.138
[INFO] [stderr]     Checking once_cell v1.12.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling semver v1.0.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling camino v1.0.9
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking unescape v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling serde_repr v0.1.8
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking cargo_metadata v0.15.0
[INFO] [stderr]     Checking rustdoc-index v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `f` and `d` are never read
[INFO] [stdout]   --> src/doc.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct Crate {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     f: F,
[INFO] [stdout]    |     ^
[INFO] [stdout] 13 |     q: Vec<String>,
[INFO] [stdout] 14 |     d: Vec<String>,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Crate` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `generics`, and `kind` are never read
[INFO] [stdout]   --> src/doc.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Type1_55_0 {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 53 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 54 |     generics: Option<Vec<String>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 55 |     kind: ItemType
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type1_55_0` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `generics`, and `kind` are never read
[INFO] [stdout]   --> src/doc.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct Type1_58_0 {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 68 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 69 |     generics: Option<Vec<Type1_58_0>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 70 |     kind: ItemType
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type1_58_0` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `f` and `d` are never read
[INFO] [stdout]   --> src/doc.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct Crate {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     f: F,
[INFO] [stdout]    |     ^
[INFO] [stdout] 13 |     q: Vec<String>,
[INFO] [stdout] 14 |     d: Vec<String>,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Crate` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `generics`, and `kind` are never read
[INFO] [stdout]   --> src/doc.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Type1_55_0 {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 53 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 54 |     generics: Option<Vec<String>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 55 |     kind: ItemType
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type1_55_0` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `generics`, and `kind` are never read
[INFO] [stdout]   --> src/doc.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct Type1_58_0 {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 68 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 69 |     generics: Option<Vec<Type1_58_0>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 70 |     kind: ItemType
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type1_58_0` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | /     #[structopt(name = "listdoc")]
[INFO] [stdout] 9 | |     _void: String,
[INFO] [stdout]   | |_________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(name = "line")]
[INFO] [stdout] 23 | |     #[structopt(help = "A line of list")]
[INFO] [stdout] 24 | |     line: String
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustdoc-index` (bin "cargo-listdoc") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | /     #[structopt(name = "listdoc")]
[INFO] [stdout] 9 | |     _void: String,
[INFO] [stdout]   | |_________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(name = "line")]
[INFO] [stdout] 23 | |     #[structopt(help = "A line of list")]
[INFO] [stdout] 24 | |     line: String
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustdoc-index` (bin "cargo-listdoc" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "686bf00de046074f16af082d1bd8ec2b12a1c2b4bf184abd5d20e47b3c0512f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686bf00de046074f16af082d1bd8ec2b12a1c2b4bf184abd5d20e47b3c0512f7", kill_on_drop: false }`
[INFO] [stdout] 686bf00de046074f16af082d1bd8ec2b12a1c2b4bf184abd5d20e47b3c0512f7
