[INFO] fetching crate nbdkit 0.2.0...
[INFO] testing nbdkit-0.2.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate nbdkit 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate nbdkit 0.2.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nbdkit 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nbdkit 0.2.0
[INFO] tweaked toml for crates.io crate nbdkit 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate nbdkit 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded downcast v0.10.0
[INFO] [stderr]   Downloaded float-cmp v0.6.0
[INFO] [stderr]   Downloaded fragile v1.0.0
[INFO] [stderr]   Downloaded predicates v1.0.4
[INFO] [stderr]   Downloaded mockall v0.8.2
[INFO] [stderr]   Downloaded mockall_derive v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fff55abc487af407478e3e0168685bc2dfc2366138e67e85ef3ea760735d5a25
[INFO] running `Command { std: "docker" "start" "-a" "fff55abc487af407478e3e0168685bc2dfc2366138e67e85ef3ea760735d5a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fff55abc487af407478e3e0168685bc2dfc2366138e67e85ef3ea760735d5a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff55abc487af407478e3e0168685bc2dfc2366138e67e85ef3ea760735d5a25", kill_on_drop: false }`
[INFO] [stdout] fff55abc487af407478e3e0168685bc2dfc2366138e67e85ef3ea760735d5a25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 565d83cdc8324e0b909900cfd53ae9035806a83efc6c4dbd07019ea98816c92c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "565d83cdc8324e0b909900cfd53ae9035806a83efc6c4dbd07019ea98816c92c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling nbdkit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "565d83cdc8324e0b909900cfd53ae9035806a83efc6c4dbd07019ea98816c92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "565d83cdc8324e0b909900cfd53ae9035806a83efc6c4dbd07019ea98816c92c", kill_on_drop: false }`
[INFO] [stdout] 565d83cdc8324e0b909900cfd53ae9035806a83efc6c4dbd07019ea98816c92c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e07767aa064b8d7b99bfddb721a0cb7d2f6119352f1ebacba4135be9bbfe509e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e07767aa064b8d7b99bfddb721a0cb7d2f6119352f1ebacba4135be9bbfe509e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling downcast v0.10.0
[INFO] [stderr]    Compiling fragile v1.0.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling float-cmp v0.6.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling predicates v1.0.4
[INFO] [stderr]    Compiling mockall_derive v0.8.2
[INFO] [stderr]    Compiling mockall v0.8.2
[INFO] [stderr]    Compiling nbdkit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 42.32s
[INFO] running `Command { std: "docker" "inspect" "e07767aa064b8d7b99bfddb721a0cb7d2f6119352f1ebacba4135be9bbfe509e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e07767aa064b8d7b99bfddb721a0cb7d2f6119352f1ebacba4135be9bbfe509e", kill_on_drop: false }`
[INFO] [stdout] e07767aa064b8d7b99bfddb721a0cb7d2f6119352f1ebacba4135be9bbfe509e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fb3d1ed36b03e649b531e65d22cd065f3938a9593f4b3a9a5466e53a0fa15b7e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb3d1ed36b03e649b531e65d22cd065f3938a9593f4b3a9a5466e53a0fa15b7e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nbdkit-e0cf99b358a780f4)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bare_bones.rs (/opt/rustwide/target/debug/deps/bare_bones-d4fd92d11af3d7c0)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running tests/full_featured.rs (/opt/rustwide/target/debug/deps/full_featured-c2e7961979ee6946)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test open_close ... ok
[INFO] [stdout] test pread::ok ... ok
[INFO] [stdout] test pread::eio ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test can_cache::eio ... ok
[INFO] [stdout] test can_trim::ok ... ok
[INFO] [stdout] test can_flush::ok ... ok
[INFO] [stdout] test can_fua::eio ... ok
[INFO] [stdout] test can_flush::eio ... ok
[INFO] [stdout] test can_extents::ok ... ok
[INFO] [stdout] test can_trim::eio ... ok
[INFO] [stdout] test can_extents::eio ... ok
[INFO] [stdout] test can_cache::ok ... ok
[INFO] [stdout] test can_zero::ok ... ok
[INFO] [stdout] test can_zero::eio ... ok
[INFO] [stdout] test description ... ok
[INFO] [stdout] test can_fast_zero::ok ... ok
[INFO] [stdout] test config_help ... ok
[INFO] [stdout] test config_complete::ok ... ok
[INFO] [stdout] test cache::ok ... ok
[INFO] [stdout] test dump_plugin::ok ... ok
[INFO] [stdout] test can_fua::ok ... ok
[INFO] [stdout] test config::ok ... ok
[INFO] [stdout] test config::einval ... ok
[INFO] [stdout] test is_rotational::eio ... ok
[INFO] [stdout] test flush::eio ... ok
[INFO] [stdout] test load::ok ... ok
[INFO] [stdout] test longname ... ok
[INFO] [stdout] test magic_config_key ... ok
[INFO] [stdout] test name ... ok
[INFO] [stdout] test preconnect::einval ... ok
[INFO] [stdout] test can_fast_zero::eio ... ok
[INFO] [stdout] test can_multi_conn::eio ... ok
[INFO] [stdout] test extents::req_one ... ok
[INFO] [stdout] test pwrite::eio ... ok
[INFO] [stdout] test can_write::ok ... ok
[INFO] [stdout] test pwrite::ok ... ok
[INFO] [stdout] test thread_model::ok ... ok
[INFO] [stdout] test extents::eopnotsupp ... ok
[INFO] [stdout] test thread_model::eio ... ok
[INFO] [stdout] test extents::extent_error ... ok
[INFO] [stdout] test config_complete::einval ... ok
[INFO] [stdout] test preconnect::ok ... ok
[INFO] [stdout] test is_rotational::ok ... ok
[INFO] [stdout] test can_write::eio ... ok
[INFO] [stdout] test get_ready::einval ... ok
[INFO] [stdout] test flush::ok ... ok
[INFO] [stdout] test can_multi_conn::ok ... ok
[INFO] [stdout] test cache::eio ... ok
[INFO] [stdout] test trim::eio ... ok
[INFO] [stdout] test trim::ok ... ok
[INFO] [stdout] test get_ready::ok ... ok
[INFO] [stdout] test unload::ok ... ok
[INFO] [stdout] test zero::eio ... ok
[INFO] [stdout] test zero::ok ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nbdkit
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 38) - compile ... ok
[INFO] [stdout] test src/lib.rs - Error::new (line 99) ... ok
[INFO] [stdout] test src/lib.rs - plugin (line 1192) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fb3d1ed36b03e649b531e65d22cd065f3938a9593f4b3a9a5466e53a0fa15b7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb3d1ed36b03e649b531e65d22cd065f3938a9593f4b3a9a5466e53a0fa15b7e", kill_on_drop: false }`
[INFO] [stdout] fb3d1ed36b03e649b531e65d22cd065f3938a9593f4b3a9a5466e53a0fa15b7e