[INFO] fetching crate lfbs 0.1.0...
[INFO] testing lfbs-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate lfbs 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate lfbs 0.1.0
[INFO] finished tweaking crates.io crate lfbs 0.1.0
[INFO] tweaked toml for crates.io crate lfbs 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lfbs 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ef2c15109d8c742dafa2635c46e7cfc4f1ca0aa9c3e9a24d6f85b0e5991b8fa
[INFO] running `Command { std: "docker" "start" "-a" "8ef2c15109d8c742dafa2635c46e7cfc4f1ca0aa9c3e9a24d6f85b0e5991b8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ef2c15109d8c742dafa2635c46e7cfc4f1ca0aa9c3e9a24d6f85b0e5991b8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ef2c15109d8c742dafa2635c46e7cfc4f1ca0aa9c3e9a24d6f85b0e5991b8fa", kill_on_drop: false }`
[INFO] [stdout] 8ef2c15109d8c742dafa2635c46e7cfc4f1ca0aa9c3e9a24d6f85b0e5991b8fa
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dabb70ce21f48e6a7bdd73ecab6f1f97e5b6a08ea542ad95a866c14ab89b8eb1
[INFO] running `Command { std: "docker" "start" "-a" "dabb70ce21f48e6a7bdd73ecab6f1f97e5b6a08ea542ad95a866c14ab89b8eb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling lfbs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "dabb70ce21f48e6a7bdd73ecab6f1f97e5b6a08ea542ad95a866c14ab89b8eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dabb70ce21f48e6a7bdd73ecab6f1f97e5b6a08ea542ad95a866c14ab89b8eb1", kill_on_drop: false }`
[INFO] [stdout] dabb70ce21f48e6a7bdd73ecab6f1f97e5b6a08ea542ad95a866c14ab89b8eb1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84b4e1e8b8f50299c64d8ed6da64f8443a5d4b709f1f7a1e1bee0fe262a6b53b
[INFO] running `Command { std: "docker" "start" "-a" "84b4e1e8b8f50299c64d8ed6da64f8443a5d4b709f1f7a1e1bee0fe262a6b53b", kill_on_drop: false }`
[INFO] [stderr]    Compiling lfbs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]    --> src/lib.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     struct DropCount<'a, T> {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 124 |         val: T,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "84b4e1e8b8f50299c64d8ed6da64f8443a5d4b709f1f7a1e1bee0fe262a6b53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b4e1e8b8f50299c64d8ed6da64f8443a5d4b709f1f7a1e1bee0fe262a6b53b", kill_on_drop: false }`
[INFO] [stdout] 84b4e1e8b8f50299c64d8ed6da64f8443a5d4b709f1f7a1e1bee0fe262a6b53b
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6c9064cabadf85fa3b0d9b6f74df510943dd7f13050c60647aa056b3ab17f46a
[INFO] running `Command { std: "docker" "start" "-a" "6c9064cabadf85fa3b0d9b6f74df510943dd7f13050c60647aa056b3ab17f46a", kill_on_drop: false }`
[INFO] [stderr] warning: field `val` is never read
[INFO] [stderr]    --> src/lib.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     struct DropCount<'a, T> {
[INFO] [stderr]     |            --------- field in this struct
[INFO] [stderr] 124 |         val: T,
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lfbs` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lfbs-5ebeae6c1b05ab20)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::drop_count ... ok
[INFO] [stdout] test test::multithread_push ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.65s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lfbs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6c9064cabadf85fa3b0d9b6f74df510943dd7f13050c60647aa056b3ab17f46a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9064cabadf85fa3b0d9b6f74df510943dd7f13050c60647aa056b3ab17f46a", kill_on_drop: false }`
[INFO] [stdout] 6c9064cabadf85fa3b0d9b6f74df510943dd7f13050c60647aa056b3ab17f46a