[INFO] fetching crate tower-web 0.3.7...
[INFO] checking tower-web-0.3.7 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate tower-web 0.3.7 into /workspace/builds/worker-94/source
[INFO] validating manifest of crates.io crate tower-web 0.3.7 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tower-web 0.3.7
[INFO] finished tweaking crates.io crate tower-web 0.3.7
[INFO] tweaked toml for crates.io crate tower-web 0.3.7 written to /workspace/builds/worker-94/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66cef81c4c521f288604e3cbfa6017fb33b5481042ef6526f4422e4cc89dd897
[INFO] running `Command { std: "docker" "start" "-a" "66cef81c4c521f288604e3cbfa6017fb33b5481042ef6526f4422e4cc89dd897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66cef81c4c521f288604e3cbfa6017fb33b5481042ef6526f4422e4cc89dd897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66cef81c4c521f288604e3cbfa6017fb33b5481042ef6526f4422e4cc89dd897", kill_on_drop: false }`
[INFO] [stdout] 66cef81c4c521f288604e3cbfa6017fb33b5481042ef6526f4422e4cc89dd897
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4ef1c4559e709f1aad1197e1b340ec7b4bd6ba91dd389a7979b809b0e2fe396
[INFO] running `Command { std: "docker" "start" "-a" "b4ef1c4559e709f1aad1197e1b340ec7b4bd6ba91dd389a7979b809b0e2fe396", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling crc32fast v1.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr] error: could not compile `futures`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.31/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' --cfg 'feature="with-deprecated"' -C metadata=e0ed641fc67e7bc1 -C extra-filename=-e0ed641fc67e7bc1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (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" "b4ef1c4559e709f1aad1197e1b340ec7b4bd6ba91dd389a7979b809b0e2fe396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4ef1c4559e709f1aad1197e1b340ec7b4bd6ba91dd389a7979b809b0e2fe396", kill_on_drop: false }`
[INFO] [stdout] b4ef1c4559e709f1aad1197e1b340ec7b4bd6ba91dd389a7979b809b0e2fe396