[INFO] cloning repository https://github.com/jimblandy/context-switch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimblandy/context-switch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fcontext-switch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fcontext-switch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 692fcf07024861fecf1c08bfbe31a74b4118de14
[INFO] testing jimblandy/context-switch against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fcontext-switch" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jimblandy/context-switch
[INFO] finished tweaking git repo https://github.com/jimblandy/context-switch
[INFO] tweaked toml for git repo https://github.com/jimblandy/context-switch written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jimblandy/context-switch on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jimblandy/context-switch 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.31
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.81
[INFO] [stderr]   Downloaded gloo-timers v0.2.4
[INFO] [stderr]   Downloaded event-listener v2.5.2
[INFO] [stderr]   Downloaded async-channel v1.6.1
[INFO] [stderr]   Downloaded async-task v4.2.0
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded polling v2.2.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.9
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.81
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.9
[INFO] [stderr]   Downloaded js-sys v0.3.58
[INFO] [stderr]   Downloaded bumpalo v3.10.0
[INFO] [stderr]   Downloaded quote v1.0.20
[INFO] [stderr]   Downloaded unicode-ident v1.0.1
[INFO] [stderr]   Downloaded atomic-waker v1.0.0
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.81
[INFO] [stderr]   Downloaded concurrent-queue v1.2.2
[INFO] [stderr]   Downloaded async-io v1.7.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.26
[INFO] [stderr]   Downloaded regex v1.5.6
[INFO] [stderr]   Downloaded syn v1.0.98
[INFO] [stderr]   Downloaded slab v0.4.6
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.81
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.81
[INFO] [stderr]   Downloaded proc-macro2 v1.0.40
[INFO] [stderr]   Downloaded blocking v1.2.0
[INFO] [stderr]   Downloaded async-global-executor v2.1.0
[INFO] [stderr]   Downloaded async-lock v2.5.0
[INFO] [stderr]   Downloaded tokio v1.19.2
[INFO] [stderr]   Downloaded web-sys v0.3.58
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aef4eafee1fdefe26beec75bb78a653e74ade5bcb922be48da1ef0b902ba1aaa
[INFO] running `Command { std: "docker" "start" "-a" "aef4eafee1fdefe26beec75bb78a653e74ade5bcb922be48da1ef0b902ba1aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aef4eafee1fdefe26beec75bb78a653e74ade5bcb922be48da1ef0b902ba1aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef4eafee1fdefe26beec75bb78a653e74ade5bcb922be48da1ef0b902ba1aaa", kill_on_drop: false }`
[INFO] [stdout] aef4eafee1fdefe26beec75bb78a653e74ade5bcb922be48da1ef0b902ba1aaa
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2089d2ff41247a2e1603a82dbf38aa40421751905039ceb656aa2f7ee75ad433
[INFO] running `Command { std: "docker" "start" "-a" "2089d2ff41247a2e1603a82dbf38aa40421751905039ceb656aa2f7ee75ad433", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling once_cell v1.12.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling event-listener v2.5.2
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling async-task v4.2.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.9
[INFO] [stderr]    Compiling async-lock v2.5.0
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling one-thread-brigade v0.1.0 (/opt/rustwide/workdir/one-thread-brigade)
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling blocking v1.2.0
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling ctor v0.1.22
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling polling v2.2.0
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.7.0
[INFO] [stderr]    Compiling tokio v1.19.2
[INFO] [stderr]    Compiling async-global-executor v2.1.0
[INFO] [stderr]    Compiling async-std v1.12.0
[INFO] [stderr]    Compiling docopt v1.1.1
[INFO] [stderr]    Compiling async-mem-brigade v0.1.0 (/opt/rustwide/workdir/async-mem-brigade)
[INFO] [stderr]    Compiling async-brigade v0.1.0 (/opt/rustwide/workdir/async-brigade)
[INFO] [stderr]    Compiling thread-creation v0.1.0 (/opt/rustwide/workdir/thread-creation)
[INFO] [stderr]    Compiling thread-brigade v0.1.0 (/opt/rustwide/workdir/thread-brigade)
[INFO] [stderr]    Compiling async-creation v0.1.0 (/opt/rustwide/workdir/async-creation)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.30s
[INFO] running `Command { std: "docker" "inspect" "2089d2ff41247a2e1603a82dbf38aa40421751905039ceb656aa2f7ee75ad433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2089d2ff41247a2e1603a82dbf38aa40421751905039ceb656aa2f7ee75ad433", kill_on_drop: false }`
[INFO] [stdout] 2089d2ff41247a2e1603a82dbf38aa40421751905039ceb656aa2f7ee75ad433
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a03f6ed1f292031406d0954a055f3b4f2f4041031201321bf5ec2fbe5c3c2f1d
[INFO] running `Command { std: "docker" "start" "-a" "a03f6ed1f292031406d0954a055f3b4f2f4041031201321bf5ec2fbe5c3c2f1d", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling one-thread-brigade v0.1.0 (/opt/rustwide/workdir/one-thread-brigade)
[INFO] [stderr]    Compiling utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]    Compiling thread-brigade v0.1.0 (/opt/rustwide/workdir/thread-brigade)
[INFO] [stderr]    Compiling thread-creation v0.1.0 (/opt/rustwide/workdir/thread-creation)
[INFO] [stderr]    Compiling async-brigade v0.1.0 (/opt/rustwide/workdir/async-brigade)
[INFO] [stderr]    Compiling async-mem-brigade v0.1.0 (/opt/rustwide/workdir/async-mem-brigade)
[INFO] [stderr]    Compiling async-creation v0.1.0 (/opt/rustwide/workdir/async-creation)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "a03f6ed1f292031406d0954a055f3b4f2f4041031201321bf5ec2fbe5c3c2f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03f6ed1f292031406d0954a055f3b4f2f4041031201321bf5ec2fbe5c3c2f1d", kill_on_drop: false }`
[INFO] [stdout] a03f6ed1f292031406d0954a055f3b4f2f4041031201321bf5ec2fbe5c3c2f1d
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 07d68b0857f6e71ef8e839df96b6f53929f3ae51f23cfabcc0a181a4a244e000
[INFO] running `Command { std: "docker" "start" "-a" "07d68b0857f6e71ef8e839df96b6f53929f3ae51f23cfabcc0a181a4a244e000", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/async_brigade-b87227cfeb89e9c4)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/async_creation-59abb61cfc06c0e4)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/async_mem_brigade-558e2de0e066d065)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/one_thread_brigade-1e067e8d94814c72)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/thread_brigade-974a30422823b6a5)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/thread_creation-8df4aa6ff26a6aba)
[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] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/utils-cc532f79ec8a7fcf)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test stats::pop_stddev ... 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 utils
[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" "07d68b0857f6e71ef8e839df96b6f53929f3ae51f23cfabcc0a181a4a244e000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07d68b0857f6e71ef8e839df96b6f53929f3ae51f23cfabcc0a181a4a244e000", kill_on_drop: false }`
[INFO] [stdout] 07d68b0857f6e71ef8e839df96b6f53929f3ae51f23cfabcc0a181a4a244e000