[INFO] cloning repository https://github.com/mjibson/plan9
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mjibson/plan9" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26c438c7e603de73cdfbec1f2dad3ed80225e86c
[INFO] checking mjibson/plan9 against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mjibson/plan9
[INFO] finished tweaking git repo https://github.com/mjibson/plan9
[INFO] tweaked toml for git repo https://github.com/mjibson/plan9 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mjibson/plan9 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mjibson/plan9 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xdg v2.4.1
[INFO] [stderr]   Downloaded nine v0.5.0
[INFO] [stderr]   Downloaded lsp-types v0.93.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94378d3cddadf1322727c4058a029a8e305135df0525be6c24ab3c0a391f9bc6
[INFO] running `Command { std: "docker" "start" "-a" "94378d3cddadf1322727c4058a029a8e305135df0525be6c24ab3c0a391f9bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94378d3cddadf1322727c4058a029a8e305135df0525be6c24ab3c0a391f9bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94378d3cddadf1322727c4058a029a8e305135df0525be6c24ab3c0a391f9bc6", kill_on_drop: false }`
[INFO] [stdout] 94378d3cddadf1322727c4058a029a8e305135df0525be6c24ab3c0a391f9bc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7de622aa3c83f2ff617ad105dd0033d6ebcc3f2b9652f19fde46328445f3b7c
[INFO] running `Command { std: "docker" "start" "-a" "a7de622aa3c83f2ff617ad105dd0033d6ebcc3f2b9652f19fde46328445f3b7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.66
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking object v0.29.0
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_repr v0.1.9
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking nine v0.5.0
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking plan9 v0.1.1 (/opt/rustwide/workdir/plan9)
[INFO] [stderr]     Checking lsp-types v0.93.1
[INFO] [stderr]     Checking acre v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `code` and `data` are never read
[INFO] [stdout]    --> src/lsp.rs:208:6
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct ResponseError {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] 208 |     pub code: i64,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 209 |     pub message: String,
[INFO] [stdout] 210 |     pub data: Option<serde_json::Value>,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ResponseError` 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: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/main.rs:639:5
[INFO] [stdout]     |
[INFO] [stdout] 639 |                 drop(sw);
[INFO] [stdout]     |                 ^^^^^--^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `&mut ServerWin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 639 -                 drop(sw);
[INFO] [stdout] 639 +                 let _ = sw;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1208:3
[INFO] [stdout]      |
[INFO] [stdout] 1208 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1208 -         drop(sw);
[INFO] [stdout] 1208 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1299:3
[INFO] [stdout]      |
[INFO] [stdout] 1299 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1299 -         drop(sw);
[INFO] [stdout] 1299 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1508:3
[INFO] [stdout]      |
[INFO] [stdout] 1508 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1508 -         drop(sw);
[INFO] [stdout] 1508 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `data` are never read
[INFO] [stdout]    --> src/lsp.rs:208:6
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct ResponseError {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] 208 |     pub code: i64,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 209 |     pub message: String,
[INFO] [stdout] 210 |     pub data: Option<serde_json::Value>,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ResponseError` 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: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/main.rs:639:5
[INFO] [stdout]     |
[INFO] [stdout] 639 |                 drop(sw);
[INFO] [stdout]     |                 ^^^^^--^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `&mut ServerWin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 639 -                 drop(sw);
[INFO] [stdout] 639 +                 let _ = sw;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1208:3
[INFO] [stdout]      |
[INFO] [stdout] 1208 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1208 -         drop(sw);
[INFO] [stdout] 1208 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1299:3
[INFO] [stdout]      |
[INFO] [stdout] 1299 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1299 -         drop(sw);
[INFO] [stdout] 1299 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/main.rs:1508:3
[INFO] [stdout]      |
[INFO] [stdout] 1508 |         drop(sw);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut ServerWin`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1508 -         drop(sw);
[INFO] [stdout] 1508 +         let _ = sw;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.61s
[INFO] running `Command { std: "docker" "inspect" "a7de622aa3c83f2ff617ad105dd0033d6ebcc3f2b9652f19fde46328445f3b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7de622aa3c83f2ff617ad105dd0033d6ebcc3f2b9652f19fde46328445f3b7c", kill_on_drop: false }`
[INFO] [stdout] a7de622aa3c83f2ff617ad105dd0033d6ebcc3f2b9652f19fde46328445f3b7c
