[INFO] cloning repository https://github.com/lukehsiao/openring-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lukehsiao/openring-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukehsiao%2Fopenring-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukehsiao%2Fopenring-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a2c609401a6eee0ad2b1115e20fc6d645e0cccd
[INFO] checking lukehsiao/openring-rs against try#ed606620234c6b50f2414162c4bbabd5f4a925f3 for pr-147995
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukehsiao%2Fopenring-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lukehsiao/openring-rs
[INFO] finished tweaking git repo https://github.com/lukehsiao/openring-rs
[INFO] tweaked toml for git repo https://github.com/lukehsiao/openring-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lukehsiao/openring-rs on toolchain ed606620234c6b50f2414162c4bbabd5f4a925f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lukehsiao/openring-rs 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" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b7be4f6d219ce47ef8824077fdec1b7739aad6bf6481c7d6f17607de88365ed
[INFO] running `Command { std: "docker" "start" "-a" "1b7be4f6d219ce47ef8824077fdec1b7739aad6bf6481c7d6f17607de88365ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b7be4f6d219ce47ef8824077fdec1b7739aad6bf6481c7d6f17607de88365ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b7be4f6d219ce47ef8824077fdec1b7739aad6bf6481c7d6f17607de88365ed", kill_on_drop: false }`
[INFO] [stdout] 1b7be4f6d219ce47ef8824077fdec1b7739aad6bf6481c7d6f17607de88365ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04ee960348ed61a51231593fd77fe6414e732efba64448904082db53495680f1
[INFO] running `Command { std: "docker" "start" "-a" "04ee960348ed61a51231593fd77fe6414e732efba64448904082db53495680f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
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[INFO] [stderr]    Compiling openssl-macros v0.1.1
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[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking feed-rs v2.3.1
[INFO] [stderr]     Checking ammonia v4.1.2
[INFO] [stderr]     Checking tokio-util v0.7.16
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[INFO] [stderr]     Checking hyper-tls v0.6.0
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[INFO] [stderr]     Checking openring v0.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/error.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub src: NamedSource<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/error.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub span: SourceSpan,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]   --> src/error.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub help: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/error.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub src: NamedSource<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/error.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub span: SourceSpan,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]   --> src/error.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub help: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/error.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub src: NamedSource<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/error.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub span: SourceSpan,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]   --> src/error.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub help: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/error.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub src: NamedSource<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/error.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub span: SourceSpan,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]   --> src/error.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub help: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "04ee960348ed61a51231593fd77fe6414e732efba64448904082db53495680f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ee960348ed61a51231593fd77fe6414e732efba64448904082db53495680f1", kill_on_drop: false }`
[INFO] [stdout] 04ee960348ed61a51231593fd77fe6414e732efba64448904082db53495680f1