[INFO] fetching crate metric_daemon 0.2.0...
[INFO] checking metric_daemon-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate metric_daemon 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate metric_daemon 0.2.0
[INFO] finished tweaking crates.io crate metric_daemon 0.2.0
[INFO] tweaked toml for crates.io crate metric_daemon 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate metric_daemon 0.2.0 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 metric_daemon 0.2.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c54581bcf144f7153fdfb4d060a85dd00ed15163cc5a55e6984668aeaef3b358
[INFO] running `Command { std: "docker" "start" "-a" "c54581bcf144f7153fdfb4d060a85dd00ed15163cc5a55e6984668aeaef3b358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c54581bcf144f7153fdfb4d060a85dd00ed15163cc5a55e6984668aeaef3b358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c54581bcf144f7153fdfb4d060a85dd00ed15163cc5a55e6984668aeaef3b358", kill_on_drop: false }`
[INFO] [stdout] c54581bcf144f7153fdfb4d060a85dd00ed15163cc5a55e6984668aeaef3b358
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2f0e0a1643310fdeb5626f01a9ecc2d0182c2ce29d59eba14a3e1091ef0896fb
[INFO] running `Command { std: "docker" "start" "-a" "2f0e0a1643310fdeb5626f01a9ecc2d0182c2ce29d59eba14a3e1091ef0896fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling log v0.4.14
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[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling jobserver v0.1.22
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[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking tracing-serde v0.1.2
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[INFO] [stderr]     Checking rustc-demangle v0.1.19
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[INFO] [stderr]    Compiling heck v0.3.2
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[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chunked_transfer v1.4.0
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[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]     Checking addr2line v0.14.1
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[INFO] [stderr]     Checking webpki v0.21.4
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[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling structopt-derive v0.4.14
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[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking structopt v0.3.21
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[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking ureq v2.1.1
[INFO] [stderr]     Checking color-eyre v0.5.11
[INFO] [stderr]     Checking git2 v0.13.18
[INFO] [stderr]     Checking shadow-rs v0.5.25
[INFO] [stderr]    Compiling metric_daemon v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `assert_eq` and `assert_ne`
[INFO] [stdout]  --> src/main.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use pretty_assertions::{assert_eq, assert_ne};
[INFO] [stdout]   |                         ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[structopt(long, env = "METRIC_NAME")]
[INFO] [stdout] 14 | |     name: 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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     #[structopt(long, env = "METRIC_PROPERTIES")]
[INFO] [stdout] 16 | |     properties: Option<String>,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     #[structopt(long, env = "METRIC_SERVER_URL")]
[INFO] [stdout] 18 | |     server_url: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /     #[structopt(long, env = "METRIC_COMMAND")]
[INFO] [stdout] 20 | |     command: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metric_daemon` (bin "metric_daemon-cli" test) due to 4 previous errors; 1 warning emitted
[INFO] [stdout] warning: unused imports: `assert_eq` and `assert_ne`
[INFO] [stdout]  --> src/main.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use pretty_assertions::{assert_eq, assert_ne};
[INFO] [stdout]   |                         ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[structopt(long, env = "METRIC_NAME")]
[INFO] [stdout] 14 | |     name: 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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     #[structopt(long, env = "METRIC_PROPERTIES")]
[INFO] [stdout] 16 | |     properties: Option<String>,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     #[structopt(long, env = "METRIC_SERVER_URL")]
[INFO] [stdout] 18 | |     server_url: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /     #[structopt(long, env = "METRIC_COMMAND")]
[INFO] [stdout] 20 | |     command: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metric_daemon` (bin "metric_daemon-cli") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "2f0e0a1643310fdeb5626f01a9ecc2d0182c2ce29d59eba14a3e1091ef0896fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f0e0a1643310fdeb5626f01a9ecc2d0182c2ce29d59eba14a3e1091ef0896fb", kill_on_drop: false }`
[INFO] [stdout] 2f0e0a1643310fdeb5626f01a9ecc2d0182c2ce29d59eba14a3e1091ef0896fb