[INFO] fetching crate bridgetree 0.7.0...
[INFO] checking bridgetree-0.7.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate bridgetree 0.7.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate bridgetree 0.7.0
[INFO] finished tweaking crates.io crate bridgetree 0.7.0
[INFO] tweaked toml for crates.io crate bridgetree 0.7.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate bridgetree 0.7.0 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bridgetree 0.7.0 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded incrementalmerkletree-testing v0.2.0-backcompat.0.8
[INFO] [stderr]   Downloaded incrementalmerkletree v0.8.2
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 109ff720a6e47f17caf477f46f838a7a15650164cad13a46c7bdaa929bdd6090
[INFO] running `Command { std: "docker" "start" "-a" "109ff720a6e47f17caf477f46f838a7a15650164cad13a46c7bdaa929bdd6090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "109ff720a6e47f17caf477f46f838a7a15650164cad13a46c7bdaa929bdd6090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109ff720a6e47f17caf477f46f838a7a15650164cad13a46c7bdaa929bdd6090", kill_on_drop: false }`
[INFO] [stdout] 109ff720a6e47f17caf477f46f838a7a15650164cad13a46c7bdaa929bdd6090
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39d207424456d54ce9907a20a30b6e865ba5ef59b406847020e39dd35d6681c9
[INFO] running `Command { std: "docker" "start" "-a" "39d207424456d54ce9907a20a30b6e865ba5ef59b406847020e39dd35d6681c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.2.0
[INFO] [stderr]     Checking incrementalmerkletree v0.8.2
[INFO] [stderr]     Checking incrementalmerkletree-testing v0.2.0-backcompat.0.8
[INFO] [stderr]     Checking bridgetree v0.7.0 (/opt/rustwide/workdir)
[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: `AuthBase` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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(usize, &'a Checkpoint<C>),
[INFO] [stdout] 828 +             Checkpoint((), &'a Checkpoint<C>),
[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: `AuthBase` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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(usize, &'a Checkpoint<C>),
[INFO] [stdout] 828 +             Checkpoint((), &'a Checkpoint<C>),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.78s
[INFO] running `Command { std: "docker" "inspect" "39d207424456d54ce9907a20a30b6e865ba5ef59b406847020e39dd35d6681c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39d207424456d54ce9907a20a30b6e865ba5ef59b406847020e39dd35d6681c9", kill_on_drop: false }`
[INFO] [stdout] 39d207424456d54ce9907a20a30b6e865ba5ef59b406847020e39dd35d6681c9