[INFO] fetching crate hopcroft-karp 0.2.1...
[INFO] checking hopcroft-karp-0.2.1 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate hopcroft-karp 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate hopcroft-karp 0.2.1
[INFO] finished tweaking crates.io crate hopcroft-karp 0.2.1
[INFO] tweaked toml for crates.io crate hopcroft-karp 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hopcroft-karp 0.2.1 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d804fca49943d59b895dbab41902defd88b973c37a3752800ee5886e24d80e32
[INFO] running `Command { std: "docker" "start" "-a" "d804fca49943d59b895dbab41902defd88b973c37a3752800ee5886e24d80e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d804fca49943d59b895dbab41902defd88b973c37a3752800ee5886e24d80e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d804fca49943d59b895dbab41902defd88b973c37a3752800ee5886e24d80e32", kill_on_drop: false }`
[INFO] [stdout] d804fca49943d59b895dbab41902defd88b973c37a3752800ee5886e24d80e32
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca820cdb0892a3d4f71e9ab84780ae1aeae30178da20a477ccb18a8eb4fa4f16
[INFO] running `Command { std: "docker" "start" "-a" "ca820cdb0892a3d4f71e9ab84780ae1aeae30178da20a477ccb18a8eb4fa4f16", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking hopcroft-karp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                        ^^                ----------------------------------- the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is named 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] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:254:32
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                                ^^ the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                        ^^                ----------------------------------- the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is named 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] 250 |     fn neighbours<'a>(&'a self, u:&V) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:254:32
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<V>  {
[INFO] [stdout]     |                                ^^ the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn neighbours_guarded<'a>(&'a self, guarded:&Guarded<V>) -> std::collections::hash_set::Iter<'a, V>  {
[INFO] [stdout]     |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.77s
[INFO] running `Command { std: "docker" "inspect" "ca820cdb0892a3d4f71e9ab84780ae1aeae30178da20a477ccb18a8eb4fa4f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca820cdb0892a3d4f71e9ab84780ae1aeae30178da20a477ccb18a8eb4fa4f16", kill_on_drop: false }`
[INFO] [stdout] ca820cdb0892a3d4f71e9ab84780ae1aeae30178da20a477ccb18a8eb4fa4f16