[INFO] cloning repository https://github.com/TGLuong/test-trace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TGLuong/test-trace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTGLuong%2Ftest-trace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTGLuong%2Ftest-trace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 366707c7dab44bbffc312d9a08096cd2adea3024
[INFO] checking TGLuong/test-trace against master#ff647322379c48947c196639599067665ff9eb88 for pr-151539-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTGLuong%2Ftest-trace" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TGLuong/test-trace
[INFO] finished tweaking git repo https://github.com/TGLuong/test-trace
[INFO] tweaked toml for git repo https://github.com/TGLuong/test-trace written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TGLuong/test-trace on toolchain ff647322379c48947c196639599067665ff9eb88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TGLuong/test-trace 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" "+ff647322379c48947c196639599067665ff9eb88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8
[INFO] running `Command { std: "docker" "start" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8" "/opt/rustwide/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8" "/opt/rustwide/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `TraceContextExt`
[INFO] [stdout]  --> src/main.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use opentelemetry::trace::{TraceContextExt, TracerProvider};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::Rng;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distr::Alphanumeric`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use rand::distr::Alphanumeric;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info_span` and `span`
[INFO] [stdout]   --> src/main.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing::{event, info_span, span};
[INFO] [stdout]    |                      ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TraceContextExt`
[INFO] [stdout]  --> src/main.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use opentelemetry::trace::{TraceContextExt, TracerProvider};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::Rng;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distr::Alphanumeric`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use rand::distr::Alphanumeric;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info_span` and `span`
[INFO] [stdout]   --> src/main.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tracing::{event, info_span, span};
[INFO] [stdout]    |                      ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_context`
[INFO] [stdout]   --> src/main.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |                         let parent_context =
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_context`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_context`
[INFO] [stdout]   --> src/main.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |                         let parent_context =
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_context`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8", kill_on_drop: false }`
[INFO] [stdout] de69f177af0641ece40cc82d9757864329a40becc732f4bf86bdc9bb3fe9ffe8
