[INFO] fetching crate xdbuf 0.3.0...
[INFO] building xdbuf-0.3.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate xdbuf 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate xdbuf 0.3.0
[INFO] finished tweaking crates.io crate xdbuf 0.3.0
[INFO] tweaked toml for crates.io crate xdbuf 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xdbuf 0.3.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 007e3622a52e7285a5ede1b5894fbe68c8abb22b45e54b0bf9e48998d5423465
[INFO] running `Command { std: "docker" "start" "-a" "007e3622a52e7285a5ede1b5894fbe68c8abb22b45e54b0bf9e48998d5423465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "007e3622a52e7285a5ede1b5894fbe68c8abb22b45e54b0bf9e48998d5423465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007e3622a52e7285a5ede1b5894fbe68c8abb22b45e54b0bf9e48998d5423465", kill_on_drop: false }`
[INFO] [stdout] 007e3622a52e7285a5ede1b5894fbe68c8abb22b45e54b0bf9e48998d5423465
[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" "-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] 34abcc2ab30de54786d0bd4dafbb4f6aa180343f1303116e3a44eab82b9e6e89
[INFO] running `Command { std: "docker" "start" "-a" "34abcc2ab30de54786d0bd4dafbb4f6aa180343f1303116e3a44eab82b9e6e89", kill_on_drop: false }`
[INFO] [stderr]    Compiling xdbuf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:425:26
[INFO] [stdout]     |
[INFO] [stdout] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^ the same lifetime is hidden 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] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:454:26
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "34abcc2ab30de54786d0bd4dafbb4f6aa180343f1303116e3a44eab82b9e6e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34abcc2ab30de54786d0bd4dafbb4f6aa180343f1303116e3a44eab82b9e6e89", kill_on_drop: false }`
[INFO] [stdout] 34abcc2ab30de54786d0bd4dafbb4f6aa180343f1303116e3a44eab82b9e6e89
[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" "-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] 06e64219f0d3740a6106c33972e6821292948e9a999e5c50fa8e3cb97a72e327
[INFO] running `Command { std: "docker" "start" "-a" "06e64219f0d3740a6106c33972e6821292948e9a999e5c50fa8e3cb97a72e327", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:425:26
[INFO] [stdout]     |
[INFO] [stdout] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^ the same lifetime is hidden 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] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling xdbuf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:454:26
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:425:26
[INFO] [stdout]     |
[INFO] [stdout] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^ the same lifetime is hidden 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] 425 |     pub fn walker_from_m(&self, index: [usize; D]) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/xdbuf.rs:454:26
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<T, D>, anyhow::Error> {
[INFO] [stdout]     |                          ^^^^^ the lifetime is elided here     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 454 |     pub fn walker_from_s(&self, scalar_index: usize) -> Result<Walker<'_, T, D>, anyhow::Error> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "06e64219f0d3740a6106c33972e6821292948e9a999e5c50fa8e3cb97a72e327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e64219f0d3740a6106c33972e6821292948e9a999e5c50fa8e3cb97a72e327", kill_on_drop: false }`
[INFO] [stdout] 06e64219f0d3740a6106c33972e6821292948e9a999e5c50fa8e3cb97a72e327