[INFO] fetching crate better_btree 0.2.6...
[INFO] checking better_btree-0.2.6 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate better_btree 0.2.6 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate better_btree 0.2.6 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate better_btree 0.2.6
[INFO] finished tweaking crates.io crate better_btree 0.2.6
[INFO] tweaked toml for crates.io crate better_btree 0.2.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdca35eb8ee18ebcaa86c3b764006509a31becb05c6fe11df3301e65ecf55d2b
[INFO] running `Command { std: "docker" "start" "-a" "bdca35eb8ee18ebcaa86c3b764006509a31becb05c6fe11df3301e65ecf55d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdca35eb8ee18ebcaa86c3b764006509a31becb05c6fe11df3301e65ecf55d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdca35eb8ee18ebcaa86c3b764006509a31becb05c6fe11df3301e65ecf55d2b", kill_on_drop: false }`
[INFO] [stdout] bdca35eb8ee18ebcaa86c3b764006509a31becb05c6fe11df3301e65ecf55d2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5068fea0ab0d6f24c89c47e0b700e831d12fe5e05aedd0d09024833f3386c70e
[INFO] running `Command { std: "docker" "start" "-a" "5068fea0ab0d6f24c89c47e0b700e831d12fe5e05aedd0d09024833f3386c70e", kill_on_drop: false }`
[INFO] [stderr]     Checking better_btree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::LeafNode> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::InternalNode> {
[INFO] [stdout]     | ----------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 275 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::LeafNode> {
[INFO] [stdout]     | --------------------------------------------------------------- method in this implementation
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 287 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::InternalNode> {
[INFO] [stdout]     | ------------------------------------------------------------------- method in this implementation
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::LeafNode> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::InternalNode> {
[INFO] [stdout]     | ----------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 275 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::LeafNode> {
[INFO] [stdout]     | --------------------------------------------------------------- method in this implementation
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 287 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::InternalNode> {
[INFO] [stdout]     | ------------------------------------------------------------------- method in this implementation
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "5068fea0ab0d6f24c89c47e0b700e831d12fe5e05aedd0d09024833f3386c70e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5068fea0ab0d6f24c89c47e0b700e831d12fe5e05aedd0d09024833f3386c70e", kill_on_drop: false }`
[INFO] [stdout] 5068fea0ab0d6f24c89c47e0b700e831d12fe5e05aedd0d09024833f3386c70e
[INFO] checking better_btree-0.2.6 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate better_btree 0.2.6 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate better_btree 0.2.6 on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate better_btree 0.2.6
[INFO] finished tweaking crates.io crate better_btree 0.2.6
[INFO] tweaked toml for crates.io crate better_btree 0.2.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ef925c3f42c71a922c456c5264f58fe6ef4ef833ab8169ce6630775aa73dfd2
[INFO] running `Command { std: "docker" "start" "-a" "6ef925c3f42c71a922c456c5264f58fe6ef4ef833ab8169ce6630775aa73dfd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ef925c3f42c71a922c456c5264f58fe6ef4ef833ab8169ce6630775aa73dfd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef925c3f42c71a922c456c5264f58fe6ef4ef833ab8169ce6630775aa73dfd2", kill_on_drop: false }`
[INFO] [stdout] 6ef925c3f42c71a922c456c5264f58fe6ef4ef833ab8169ce6630775aa73dfd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7645e369ec1152040ef7ae03c4adba164ac88239c7f5228d0b3f50275f0795f
[INFO] running `Command { std: "docker" "start" "-a" "c7645e369ec1152040ef7ae03c4adba164ac88239c7f5228d0b3f50275f0795f", kill_on_drop: false }`
[INFO] [stderr]     Checking better_btree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::LeafNode> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::InternalNode> {
[INFO] [stdout]     | ----------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 275 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::LeafNode> {
[INFO] [stdout]     | --------------------------------------------------------------- method in this implementation
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 287 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::InternalNode> {
[INFO] [stdout]     | ------------------------------------------------------------------- method in this implementation
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::LeafNode> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref_mut` is never used
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, K, V> NodeRef<K, V, marker::Owned, marker::InternalNode> {
[INFO] [stdout]     | ----------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 275 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::LeafNode> {
[INFO] [stdout]     | --------------------------------------------------------------- method in this implementation
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deref` is never used
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 287 | impl<'a, K, V> NodeRef<K, V, marker::Mut<'a>, marker::InternalNode> {
[INFO] [stdout]     | ------------------------------------------------------------------- method in this implementation
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "c7645e369ec1152040ef7ae03c4adba164ac88239c7f5228d0b3f50275f0795f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7645e369ec1152040ef7ae03c4adba164ac88239c7f5228d0b3f50275f0795f", kill_on_drop: false }`
[INFO] [stdout] c7645e369ec1152040ef7ae03c4adba164ac88239c7f5228d0b3f50275f0795f
