[INFO] fetching crate relabuf 0.16.0...
[INFO] checking relabuf-0.16.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate relabuf 0.16.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate relabuf 0.16.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate relabuf 0.16.0
[INFO] finished tweaking crates.io crate relabuf 0.16.0
[INFO] tweaked toml for crates.io crate relabuf 0.16.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96a262db7aeecefa33f1de5aebf81d549e389d0e57937b8d06ed4c7b27ac7563
[INFO] running `Command { std: "docker" "start" "-a" "96a262db7aeecefa33f1de5aebf81d549e389d0e57937b8d06ed4c7b27ac7563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96a262db7aeecefa33f1de5aebf81d549e389d0e57937b8d06ed4c7b27ac7563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96a262db7aeecefa33f1de5aebf81d549e389d0e57937b8d06ed4c7b27ac7563", kill_on_drop: false }`
[INFO] [stdout] 96a262db7aeecefa33f1de5aebf81d549e389d0e57937b8d06ed4c7b27ac7563
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90298e9f4dad65c04183c95c2aaca62976f6e9c27f38e7b8de29a2aeb73a2ca8
[INFO] running `Command { std: "docker" "start" "-a" "90298e9f4dad65c04183c95c2aaca62976f6e9c27f38e7b8de29a2aeb73a2ca8", 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]    Compiling libc v0.2.108
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling anyhow v1.0.50
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking smol-timeout v0.6.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking flume v0.10.9
[INFO] [stderr]     Checking backoff v0.3.0
[INFO] [stderr]     Checking relabuf v0.16.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.68s
[INFO] running `Command { std: "docker" "inspect" "90298e9f4dad65c04183c95c2aaca62976f6e9c27f38e7b8de29a2aeb73a2ca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90298e9f4dad65c04183c95c2aaca62976f6e9c27f38e7b8de29a2aeb73a2ca8", kill_on_drop: false }`
[INFO] [stdout] 90298e9f4dad65c04183c95c2aaca62976f6e9c27f38e7b8de29a2aeb73a2ca8