[INFO] fetching crate vmcircbuf 0.2.8...
[INFO] testing vmcircbuf-0.2.8 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate vmcircbuf 0.2.8 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate vmcircbuf 0.2.8 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vmcircbuf 0.2.8
[INFO] finished tweaking crates.io crate vmcircbuf 0.2.8
[INFO] tweaked toml for crates.io crate vmcircbuf 0.2.8 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f58a686ad811faa2c30febe5e6188d7498f95226495f394be2aa452cee966f5c
[INFO] running `Command { std: "docker" "start" "-a" "f58a686ad811faa2c30febe5e6188d7498f95226495f394be2aa452cee966f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f58a686ad811faa2c30febe5e6188d7498f95226495f394be2aa452cee966f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f58a686ad811faa2c30febe5e6188d7498f95226495f394be2aa452cee966f5c", kill_on_drop: false }`
[INFO] [stdout] f58a686ad811faa2c30febe5e6188d7498f95226495f394be2aa452cee966f5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63ca60c59621c61cd30152f362325d26738ce22ffb29d7bd91b0da6fc68904cd
[INFO] running `Command { std: "docker" "start" "-a" "63ca60c59621c61cd30152f362325d26738ce22ffb29d7bd91b0da6fc68904cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling vmcircbuf v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "63ca60c59621c61cd30152f362325d26738ce22ffb29d7bd91b0da6fc68904cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ca60c59621c61cd30152f362325d26738ce22ffb29d7bd91b0da6fc68904cd", kill_on_drop: false }`
[INFO] [stdout] 63ca60c59621c61cd30152f362325d26738ce22ffb29d7bd91b0da6fc68904cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b810355980af01b20423a838f0280a4e221e2a6df74fc51cfadc41164e7a3b6d
[INFO] running `Command { std: "docker" "start" "-a" "b810355980af01b20423a838f0280a4e221e2a6df74fc51cfadc41164e7a3b6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling vmcircbuf v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "b810355980af01b20423a838f0280a4e221e2a6df74fc51cfadc41164e7a3b6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b810355980af01b20423a838f0280a4e221e2a6df74fc51cfadc41164e7a3b6d", kill_on_drop: false }`
[INFO] [stdout] b810355980af01b20423a838f0280a4e221e2a6df74fc51cfadc41164e7a3b6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 45ad7b9a922c48f67dba55d28c1722202b8926d7474a27d4e370b7a3ba6a8a34
[INFO] running `Command { std: "docker" "start" "-a" "45ad7b9a922c48f67dba55d28c1722202b8926d7474a27d4e370b7a3ba6a8a34", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vmcircbuf-333ac1b41717b829)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test buffer::tests::wrap ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vmcircbuf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/buffer.rs - buffer::Buffer (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "45ad7b9a922c48f67dba55d28c1722202b8926d7474a27d4e370b7a3ba6a8a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45ad7b9a922c48f67dba55d28c1722202b8926d7474a27d4e370b7a3ba6a8a34", kill_on_drop: false }`
[INFO] [stdout] 45ad7b9a922c48f67dba55d28c1722202b8926d7474a27d4e370b7a3ba6a8a34