[INFO] fetching crate bridgetree 0.4.0...
[INFO] checking bridgetree-0.4.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate bridgetree 0.4.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate bridgetree 0.4.0 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 bridgetree 0.4.0
[INFO] finished tweaking crates.io crate bridgetree 0.4.0
[INFO] tweaked toml for crates.io crate bridgetree 0.4.0 written to /workspace/builds/worker-2-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] [stderr]     Updating crates.io index
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded incrementalmerkletree v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 752018432d6329ab14cb61f0fe6095f37278b328c2d0e34c68152944a01c85fc
[INFO] running `Command { std: "docker" "start" "-a" "752018432d6329ab14cb61f0fe6095f37278b328c2d0e34c68152944a01c85fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "752018432d6329ab14cb61f0fe6095f37278b328c2d0e34c68152944a01c85fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "752018432d6329ab14cb61f0fe6095f37278b328c2d0e34c68152944a01c85fc", kill_on_drop: false }`
[INFO] [stdout] 752018432d6329ab14cb61f0fe6095f37278b328c2d0e34c68152944a01c85fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6107911a07748e4a4b469a4e9db527fd3e6716e5ba6784e48f9ffdcbb02dafc1
[INFO] running `Command { std: "docker" "start" "-a" "6107911a07748e4a4b469a4e9db527fd3e6716e5ba6784e48f9ffdcbb02dafc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.4.0
[INFO] [stderr]     Checking incrementalmerkletree v0.5.0
[INFO] [stderr]     Checking bridgetree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:986:9
[INFO] [stdout]     |
[INFO] [stdout] 986 |     use std::fmt::Debug;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 987 |
[INFO] [stdout] 988 |     use super::*;
[INFO] [stdout]     |         -------- the item `Debug` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Hashable` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:995:9
[INFO] [stdout]     |
[INFO] [stdout] 988 |     use super::*;
[INFO] [stdout]     |         -------- the item `Hashable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 995 |         Hashable,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:828:24
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint(usize, &'a Checkpoint<C>),
[INFO] [stdout]     |             ---------- ^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint((), &'a Checkpoint<C>),
[INFO] [stdout]     |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:828:24
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint(usize, &'a Checkpoint<C>),
[INFO] [stdout]     |             ---------- ^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint((), &'a Checkpoint<C>),
[INFO] [stdout]     |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.21s
[INFO] running `Command { std: "docker" "inspect" "6107911a07748e4a4b469a4e9db527fd3e6716e5ba6784e48f9ffdcbb02dafc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6107911a07748e4a4b469a4e9db527fd3e6716e5ba6784e48f9ffdcbb02dafc1", kill_on_drop: false }`
[INFO] [stdout] 6107911a07748e4a4b469a4e9db527fd3e6716e5ba6784e48f9ffdcbb02dafc1
[INFO] checking bridgetree-0.4.0 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate bridgetree 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate bridgetree 0.4.0 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 bridgetree 0.4.0
[INFO] finished tweaking crates.io crate bridgetree 0.4.0
[INFO] tweaked toml for crates.io crate bridgetree 0.4.0 written to /workspace/builds/worker-2-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c08324c8cba42e7fcfce72fb6a9a9a77f2ae0de1aaeb353e959a9d88af70aa06
[INFO] running `Command { std: "docker" "start" "-a" "c08324c8cba42e7fcfce72fb6a9a9a77f2ae0de1aaeb353e959a9d88af70aa06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c08324c8cba42e7fcfce72fb6a9a9a77f2ae0de1aaeb353e959a9d88af70aa06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c08324c8cba42e7fcfce72fb6a9a9a77f2ae0de1aaeb353e959a9d88af70aa06", kill_on_drop: false }`
[INFO] [stdout] c08324c8cba42e7fcfce72fb6a9a9a77f2ae0de1aaeb353e959a9d88af70aa06
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1337e69eac13fb6e00d4beac678a02d38e0d98cd2afd0daf81d97656b9896a8d
[INFO] running `Command { std: "docker" "start" "-a" "1337e69eac13fb6e00d4beac678a02d38e0d98cd2afd0daf81d97656b9896a8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.4.0
[INFO] [stderr]     Checking incrementalmerkletree v0.5.0
[INFO] [stderr]     Checking bridgetree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:986:9
[INFO] [stdout]     |
[INFO] [stdout] 986 |     use std::fmt::Debug;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 987 |
[INFO] [stdout] 988 |     use super::*;
[INFO] [stdout]     |         -------- the item `Debug` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Hashable` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:995:9
[INFO] [stdout]     |
[INFO] [stdout] 988 |     use super::*;
[INFO] [stdout]     |         -------- the item `Hashable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 995 |         Hashable,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:828:24
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint(usize, &'a Checkpoint<C>),
[INFO] [stdout]     |             ---------- ^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint((), &'a Checkpoint<C>),
[INFO] [stdout]     |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:828:24
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint(usize, &'a Checkpoint<C>),
[INFO] [stdout]     |             ---------- ^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 828 |             Checkpoint((), &'a Checkpoint<C>),
[INFO] [stdout]     |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.06s
[INFO] running `Command { std: "docker" "inspect" "1337e69eac13fb6e00d4beac678a02d38e0d98cd2afd0daf81d97656b9896a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1337e69eac13fb6e00d4beac678a02d38e0d98cd2afd0daf81d97656b9896a8d", kill_on_drop: false }`
[INFO] [stdout] 1337e69eac13fb6e00d4beac678a02d38e0d98cd2afd0daf81d97656b9896a8d
