[INFO] fetching crate may 0.3.21...
[INFO] testing may-0.3.21 against 1.60.0 for beta-1.61-1
[INFO] extracting crate may 0.3.21 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate may 0.3.21 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate may 0.3.21
[INFO] finished tweaking crates.io crate may 0.3.21
[INFO] tweaked toml for crates.io crate may 0.3.21 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate may 0.3.21 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tungstenite v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 0af15463e91765bfe463f9740dac6e02e5f4f72887b9721655088e2765a91c39
[INFO] running `Command { std: "docker" "start" "-a" "0af15463e91765bfe463f9740dac6e02e5f4f72887b9721655088e2765a91c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0af15463e91765bfe463f9740dac6e02e5f4f72887b9721655088e2765a91c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af15463e91765bfe463f9740dac6e02e5f4f72887b9721655088e2765a91c39", kill_on_drop: false }`
[INFO] [stdout] 0af15463e91765bfe463f9740dac6e02e5f4f72887b9721655088e2765a91c39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", 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] c3fc0887565976026f724fb0234df0bb41cfd5ab956a341c6bdfbf5e834ff079
[INFO] running `Command { std: "docker" "start" "-a" "c3fc0887565976026f724fb0234df0bb41cfd5ab956a341c6bdfbf5e834ff079", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling may_queue v0.1.8
[INFO] [stderr]    Compiling generator v0.7.0
[INFO] [stderr]    Compiling may v0.3.21 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.53s
[INFO] running `Command { std: "docker" "inspect" "c3fc0887565976026f724fb0234df0bb41cfd5ab956a341c6bdfbf5e834ff079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fc0887565976026f724fb0234df0bb41cfd5ab956a341c6bdfbf5e834ff079", kill_on_drop: false }`
[INFO] [stdout] c3fc0887565976026f724fb0234df0bb41cfd5ab956a341c6bdfbf5e834ff079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 13e1bb745c10ef671010b1b44925bb4b2d5311bd48fdde7c922e2ec63302e960
[INFO] running `Command { std: "docker" "start" "-a" "13e1bb745c10ef671010b1b44925bb4b2d5311bd48fdde7c922e2ec63302e960", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling cpufeatures v0.2.2
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling block-buffer v0.10.2
[INFO] [stderr]    Compiling crypto-common v0.1.3
[INFO] [stderr]    Compiling digest v0.10.3
[INFO] [stderr]    Compiling sha-1 v0.10.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling tungstenite v0.17.2
[INFO] [stderr]    Compiling docopt v1.1.1
[INFO] [stderr]    Compiling may v0.3.21 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `may`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name may --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=0ae04769fdb3bb07 -C extra-filename=-0ae04769fdb3bb07 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-59116c3d90e42d31.rlib --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-3df2c791a90243b1.rlib --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-834b6b94a3908272.rlib --extern generator=/opt/rustwide/target/debug/deps/libgenerator-b27f4ad8e664e71f.rlib --extern httparse=/opt/rustwide/target/debug/deps/libhttparse-f60ef16d9dfda39c.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b341606102c7008f.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-5e2e02ff089a97b4.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-e386138908af1cd9.rlib --extern may_queue=/opt/rustwide/target/debug/deps/libmay_queue-d2919cbef5b0057b.rlib --extern native_tls=/opt/rustwide/target/debug/deps/libnative_tls-9c19337ba2bcf055.rlib --extern nix=/opt/rustwide/target/debug/deps/libnix-98cb0609dd9641ca.rlib --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-76d1def3d549a518.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-43488e885e104e40.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e6e69499e6516bb5.so --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-068ac8185082e6f5.rlib --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-4ddbe32104981cdd.rlib --extern tempdir=/opt/rustwide/target/debug/deps/libtempdir-de6879de4fb172e9.rlib --extern tungstenite=/opt/rustwide/target/debug/deps/libtungstenite-31a9afa69b392991.rlib --cap-lints=warn -L native=/opt/rustwide/target/debug/build/generator-22d046d0bcdb704f/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "13e1bb745c10ef671010b1b44925bb4b2d5311bd48fdde7c922e2ec63302e960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e1bb745c10ef671010b1b44925bb4b2d5311bd48fdde7c922e2ec63302e960", kill_on_drop: false }`
[INFO] [stdout] 13e1bb745c10ef671010b1b44925bb4b2d5311bd48fdde7c922e2ec63302e960