[INFO] fetching crate kudzu 0.1.0...
[INFO] checking kudzu-0.1.0 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate kudzu 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate kudzu 0.1.0
[INFO] finished tweaking crates.io crate kudzu 0.1.0
[INFO] tweaked toml for crates.io crate kudzu 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kudzu 0.1.0 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d00e2c43fc2617b71558d8dc4209d1476e2c5e98dd0f234e4a8e8f9f908ec91
[INFO] running `Command { std: "docker" "start" "-a" "6d00e2c43fc2617b71558d8dc4209d1476e2c5e98dd0f234e4a8e8f9f908ec91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d00e2c43fc2617b71558d8dc4209d1476e2c5e98dd0f234e4a8e8f9f908ec91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d00e2c43fc2617b71558d8dc4209d1476e2c5e98dd0f234e4a8e8f9f908ec91", kill_on_drop: false }`
[INFO] [stdout] 6d00e2c43fc2617b71558d8dc4209d1476e2c5e98dd0f234e4a8e8f9f908ec91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5519a7c4dc5870c59efe7af0adf4c45a84187f23b842e1acb7f00bb66cd3b6ae
[INFO] running `Command { std: "docker" "start" "-a" "5519a7c4dc5870c59efe7af0adf4c45a84187f23b842e1acb7f00bb66cd3b6ae", kill_on_drop: false }`
[INFO] [stderr]     Checking kudzu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `atomic_min_max` has been stable since 1.45.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(manually_drop_take, atomic_min_max)]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `manually_drop_take` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(manually_drop_take, atomic_min_max)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<*mut T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/skiplist/insert.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |             match succ == pred.compare_and_swap(succ, new_node_addr, AcqRel) {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `atomic_min_max` has been stable since 1.45.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(manually_drop_take, atomic_min_max)]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `manually_drop_take` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(manually_drop_take, atomic_min_max)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<*mut T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/skiplist/insert.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |             match succ == pred.compare_and_swap(succ, new_node_addr, AcqRel) {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/skiplist/mod.rs:62:78
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn get<'a, U: AbstractOrd<T> + ?Sized>(&'a self, elem: &U) -> Option<&T> {
[INFO] [stdout]    |                                                 --                           ^^ the same lifetime is elided 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] 62 |     pub fn get<'a, U: AbstractOrd<T> + ?Sized>(&'a self, elem: &U) -> Option<&'a T> {
[INFO] [stdout]    |                                                                               ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/skiplist/mod.rs:62:78
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn get<'a, U: AbstractOrd<T> + ?Sized>(&'a self, elem: &U) -> Option<&T> {
[INFO] [stdout]    |                                                 --                           ^^ the same lifetime is elided 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] 62 |     pub fn get<'a, U: AbstractOrd<T> + ?Sized>(&'a self, elem: &U) -> Option<&'a T> {
[INFO] [stdout]    |                                                                               ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "5519a7c4dc5870c59efe7af0adf4c45a84187f23b842e1acb7f00bb66cd3b6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5519a7c4dc5870c59efe7af0adf4c45a84187f23b842e1acb7f00bb66cd3b6ae", kill_on_drop: false }`
[INFO] [stdout] 5519a7c4dc5870c59efe7af0adf4c45a84187f23b842e1acb7f00bb66cd3b6ae
