[INFO] cloning repository https://github.com/commonkestrel/nurse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/commonkestrel/nurse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcommonkestrel%2Fnurse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcommonkestrel%2Fnurse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ff16c47e8fd0a37e9c0131c3054d4731853fe11
[INFO] checking commonkestrel/nurse/4ff16c47e8fd0a37e9c0131c3054d4731853fe11 against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcommonkestrel%2Fnurse" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/commonkestrel/nurse
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/commonkestrel/nurse
[INFO] tweaked toml for git repo https://github.com/commonkestrel/nurse written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/commonkestrel/nurse on toolchain c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/commonkestrel/nurse 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" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] [stderr]   Downloaded gloo-timers v0.3.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba1e6c39ea1de129e921f1c8b577002d22c0321c69236016bc2ac08d85a8ccf3
[INFO] running `Command { std: "docker" "start" "-a" "ba1e6c39ea1de129e921f1c8b577002d22c0321c69236016bc2ac08d85a8ccf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba1e6c39ea1de129e921f1c8b577002d22c0321c69236016bc2ac08d85a8ccf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1e6c39ea1de129e921f1c8b577002d22c0321c69236016bc2ac08d85a8ccf3", kill_on_drop: false }`
[INFO] [stdout] ba1e6c39ea1de129e921f1c8b577002d22c0321c69236016bc2ac08d85a8ccf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88d65e96d9a3d6309c6818a026182da3054157165c646a73ae40d68251f908be
[INFO] running `Command { std: "docker" "start" "-a" "88d65e96d9a3d6309c6818a026182da3054157165c646a73ae40d68251f908be", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde v1.0.215
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[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling fnv v1.0.7
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[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> src/reporter/lsp.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, io};
[INFO] [stdout]   |                                 ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Reporter`
[INFO] [stdout]  --> src/reporter/lsp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::Reporter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/span.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     sync::Arc,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color` and `Colorize`
[INFO] [stdout]  --> src/span.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use colored::{Color, Colorize};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Location` and `Lookup`
[INFO] [stdout]   --> src/span.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     lookup::{Location, Lookup},
[INFO] [stdout]    |              ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> src/reporter/lsp.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, io};
[INFO] [stdout]   |                                 ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Reporter`
[INFO] [stdout]  --> src/reporter/lsp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::Reporter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/span.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     sync::Arc,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color` and `Colorize`
[INFO] [stdout]  --> src/span.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use colored::{Color, Colorize};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Location` and `Lookup`
[INFO] [stdout]   --> src/span.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     lookup::{Location, Lookup},
[INFO] [stdout]    |              ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Note` is more private than the item `Diagnostic::set_note`
[INFO] [stdout]    --> src/diagnostic.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn set_note<S: Into<Note>>(&mut self, note: S) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Diagnostic::set_note` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Note` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/diagnostic.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Note` is more private than the item `Diagnostic::with_note`
[INFO] [stdout]    --> src/diagnostic.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn with_note<S: Into<Note>>(mut self, note: S) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Diagnostic::with_note` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Note` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/diagnostic.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/diagnostic.rs:167:16
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     |                   ---- field in this struct
[INFO] [stdout] 166 |     pub(crate) value: String,
[INFO] [stdout] 167 |     pub(crate) span: Option<Span>,
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Note` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `diagnostics` is never read
[INFO] [stdout]  --> src/reporter/lsp.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct LspReporter {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 9 |     diagnostics: Vec<Diagnostic>,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Note` is more private than the item `Diagnostic::set_note`
[INFO] [stdout]    --> src/diagnostic.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn set_note<S: Into<Note>>(&mut self, note: S) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Diagnostic::set_note` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Note` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/diagnostic.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Note` is more private than the item `Diagnostic::with_note`
[INFO] [stdout]    --> src/diagnostic.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn with_note<S: Into<Note>>(mut self, note: S) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Diagnostic::with_note` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Note` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/diagnostic.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/diagnostic.rs:167:16
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub(crate) struct Note {
[INFO] [stdout]     |                   ---- field in this struct
[INFO] [stdout] 166 |     pub(crate) value: String,
[INFO] [stdout] 167 |     pub(crate) span: Option<Span>,
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Note` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `diagnostics` is never read
[INFO] [stdout]  --> src/reporter/lsp.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct LspReporter {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 9 |     diagnostics: Vec<Diagnostic>,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/serial.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/serial.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/serial.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = reporter.emit_all(&mut std::io::stdout());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.33s
[INFO] running `Command { std: "docker" "inspect" "88d65e96d9a3d6309c6818a026182da3054157165c646a73ae40d68251f908be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d65e96d9a3d6309c6818a026182da3054157165c646a73ae40d68251f908be", kill_on_drop: false }`
[INFO] [stdout] 88d65e96d9a3d6309c6818a026182da3054157165c646a73ae40d68251f908be