[INFO] fetching crate unshield 0.2.0...
[INFO] building unshield-0.2.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate unshield 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate unshield 0.2.0
[INFO] finished tweaking crates.io crate unshield 0.2.0
[INFO] tweaked toml for crates.io crate unshield 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unshield 0.2.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unshield 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e36d5a67eee494ac140b747b24113a7635fbe77b005e1c5413501d6acf25685
[INFO] running `Command { std: "docker" "start" "-a" "6e36d5a67eee494ac140b747b24113a7635fbe77b005e1c5413501d6acf25685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e36d5a67eee494ac140b747b24113a7635fbe77b005e1c5413501d6acf25685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e36d5a67eee494ac140b747b24113a7635fbe77b005e1c5413501d6acf25685", kill_on_drop: false }`
[INFO] [stdout] 6e36d5a67eee494ac140b747b24113a7635fbe77b005e1c5413501d6acf25685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b72cb1ca81e957131cf9b2d60d7446bb5e7af2066cd6f1f0ae8b0a2063b2e36
[INFO] running `Command { std: "docker" "start" "-a" "3b72cb1ca81e957131cf9b2d60d7446bb5e7af2066cd6f1f0ae8b0a2063b2e36", kill_on_drop: false }`
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling explode v0.1.2
[INFO] [stderr]    Compiling unshield v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/format.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep> {
[INFO] [stdout]    |                 ^^^^^^^^^            ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep<'_>> {
[INFO] [stdout]    |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `files`, `size`, and `toc_offset` are never read
[INFO] [stdout]   --> src/format.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Header {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 32 |     files: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     size: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     toc_offset: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Header` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "3b72cb1ca81e957131cf9b2d60d7446bb5e7af2066cd6f1f0ae8b0a2063b2e36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b72cb1ca81e957131cf9b2d60d7446bb5e7af2066cd6f1f0ae8b0a2063b2e36", kill_on_drop: false }`
[INFO] [stdout] 3b72cb1ca81e957131cf9b2d60d7446bb5e7af2066cd6f1f0ae8b0a2063b2e36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52295228062d38cc316a6c20dc4751f17aa2745228bd05137a851f2a1ef85d0f
[INFO] running `Command { std: "docker" "start" "-a" "52295228062d38cc316a6c20dc4751f17aa2745228bd05137a851f2a1ef85d0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling fastrand v1.3.4
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/format.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep> {
[INFO] [stdout]    |                 ^^^^^^^^^            ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep<'_>> {
[INFO] [stdout]    |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `files`, `size`, and `toc_offset` are never read
[INFO] [stdout]   --> src/format.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Header {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 32 |     files: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     size: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     toc_offset: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Header` 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] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling waker-fn v1.0.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling multitask v0.2.0
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling async-executor v0.1.2
[INFO] [stderr]    Compiling unshield v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `files`, `size`, and `toc_offset` are never read
[INFO] [stdout]   --> src/format.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Header {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 32 |     files: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     size: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     toc_offset: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Header` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/format.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep> {
[INFO] [stdout]    |                 ^^^^^^^^^            ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn next(&mut self) -> Result<FormatStep<'_>> {
[INFO] [stdout]    |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "52295228062d38cc316a6c20dc4751f17aa2745228bd05137a851f2a1ef85d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52295228062d38cc316a6c20dc4751f17aa2745228bd05137a851f2a1ef85d0f", kill_on_drop: false }`
[INFO] [stdout] 52295228062d38cc316a6c20dc4751f17aa2745228bd05137a851f2a1ef85d0f