[INFO] fetching crate and-then-concurrent 0.1.0...
[INFO] checking and-then-concurrent-0.1.0 against master#4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 for pr-134276
[INFO] extracting crate and-then-concurrent 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate and-then-concurrent 0.1.0 on toolchain 4847d6a9d07d4be9ba3196f6ad444af2d7bdde72
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate and-then-concurrent 0.1.0
[INFO] finished tweaking crates.io crate and-then-concurrent 0.1.0
[INFO] tweaked toml for crates.io crate and-then-concurrent 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding tokio v0.3.7 (available: v1.42.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v0.3.2
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e262d5c6fdfdd25cb2339bb383ed80df978146790bdc54d0e28e2b87c98de317
[INFO] running `Command { std: "docker" "start" "-a" "e262d5c6fdfdd25cb2339bb383ed80df978146790bdc54d0e28e2b87c98de317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e262d5c6fdfdd25cb2339bb383ed80df978146790bdc54d0e28e2b87c98de317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e262d5c6fdfdd25cb2339bb383ed80df978146790bdc54d0e28e2b87c98de317", kill_on_drop: false }`
[INFO] [stdout] e262d5c6fdfdd25cb2339bb383ed80df978146790bdc54d0e28e2b87c98de317
[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=forbid" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e9635b28ac1e8e031aa65d05f98e3b1e3f2a8af02c3c1c0365f3e6d83fed0df
[INFO] running `Command { std: "docker" "start" "-a" "0e9635b28ac1e8e031aa65d05f98e3b1e3f2a8af02c3c1c0365f3e6d83fed0df", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.7
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking pin-project v1.1.7
[INFO] [stderr]     Checking and-then-concurrent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.67s
[INFO] running `Command { std: "docker" "inspect" "0e9635b28ac1e8e031aa65d05f98e3b1e3f2a8af02c3c1c0365f3e6d83fed0df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e9635b28ac1e8e031aa65d05f98e3b1e3f2a8af02c3c1c0365f3e6d83fed0df", kill_on_drop: false }`
[INFO] [stdout] 0e9635b28ac1e8e031aa65d05f98e3b1e3f2a8af02c3c1c0365f3e6d83fed0df