[INFO] fetching crate nibbletree 0.2.0...
[INFO] building nibbletree-0.2.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate nibbletree 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate nibbletree 0.2.0
[INFO] finished tweaking crates.io crate nibbletree 0.2.0
[INFO] tweaked toml for crates.io crate nibbletree 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibbletree 0.2.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nibbletree 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ip_network v0.4.1
[INFO] [stderr]   Downloaded rstest_reuse v0.6.0
[INFO] [stderr]   Downloaded rstest v0.18.2
[INFO] [stderr]   Downloaded relative-path v1.9.2
[INFO] [stderr]   Downloaded rstest_macros v0.18.2
[INFO] [stderr]   Downloaded semver v1.0.21
[INFO] [stderr]   Downloaded proc-macro2 v1.0.78
[INFO] [stderr]   Downloaded thin-vec v0.2.13
[INFO] [stderr]   Downloaded regex-automata v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b84770cbd4adae8f2c594b0896255fd09c7eb60eac6aa039aad0a0e3882383bc
[INFO] running `Command { std: "docker" "start" "-a" "b84770cbd4adae8f2c594b0896255fd09c7eb60eac6aa039aad0a0e3882383bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b84770cbd4adae8f2c594b0896255fd09c7eb60eac6aa039aad0a0e3882383bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b84770cbd4adae8f2c594b0896255fd09c7eb60eac6aa039aad0a0e3882383bc", kill_on_drop: false }`
[INFO] [stdout] b84770cbd4adae8f2c594b0896255fd09c7eb60eac6aa039aad0a0e3882383bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aeba58edf1a3b08d48cf913131901ebc4e85acfec664af10fba1c6dc9ad05303
[INFO] running `Command { std: "docker" "start" "-a" "aeba58edf1a3b08d48cf913131901ebc4e85acfec664af10fba1c6dc9ad05303", kill_on_drop: false }`
[INFO] [stderr]    Compiling thin-vec v0.2.13
[INFO] [stderr]    Compiling nibbletree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/node.rs:273:97
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout]     |                              -- the lifetime is named here                                      ^^ the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 273 -     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout] 273 +     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + 'a {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "aeba58edf1a3b08d48cf913131901ebc4e85acfec664af10fba1c6dc9ad05303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeba58edf1a3b08d48cf913131901ebc4e85acfec664af10fba1c6dc9ad05303", kill_on_drop: false }`
[INFO] [stdout] aeba58edf1a3b08d48cf913131901ebc4e85acfec664af10fba1c6dc9ad05303
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd4bf7d06b56e9646912b519e957238be59d607209b16725a4cd903fc5f8caad
[INFO] running `Command { std: "docker" "start" "-a" "bd4bf7d06b56e9646912b519e957238be59d607209b16725a4cd903fc5f8caad", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling relative-path v1.9.2
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/node.rs:273:97
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout]     |                              -- the lifetime is named here                                      ^^ the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 273 -     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout] 273 +     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + 'a {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]    Compiling rstest_reuse v0.6.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling rstest v0.18.2
[INFO] [stderr]    Compiling nibbletree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/node.rs:273:97
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout]     |                              -- the lifetime is named here                                      ^^ the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 273 -     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + '_ {
[INFO] [stdout] 273 +     fn keys_with_prefix<'a>(&'a self, prefix: Key) -> impl Iterator<Item = Key> + Send + Sync + 'a {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 14.48s
[INFO] running `Command { std: "docker" "inspect" "bd4bf7d06b56e9646912b519e957238be59d607209b16725a4cd903fc5f8caad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4bf7d06b56e9646912b519e957238be59d607209b16725a4cd903fc5f8caad", kill_on_drop: false }`
[INFO] [stdout] bd4bf7d06b56e9646912b519e957238be59d607209b16725a4cd903fc5f8caad