[INFO] fetching crate buffered_offset_reader 0.6.0...
[INFO] checking buffered_offset_reader-0.6.0 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate buffered_offset_reader 0.6.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate buffered_offset_reader 0.6.0 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buffered_offset_reader 0.6.0
[INFO] finished tweaking crates.io crate buffered_offset_reader 0.6.0
[INFO] tweaked toml for crates.io crate buffered_offset_reader 0.6.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] 44d94994ab2fe4e6b3d0e79e8e44bd17c7fc180610bf22425c451062af6214e9
[INFO] running `Command { std: "docker" "start" "-a" "44d94994ab2fe4e6b3d0e79e8e44bd17c7fc180610bf22425c451062af6214e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44d94994ab2fe4e6b3d0e79e8e44bd17c7fc180610bf22425c451062af6214e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d94994ab2fe4e6b3d0e79e8e44bd17c7fc180610bf22425c451062af6214e9", kill_on_drop: false }`
[INFO] [stdout] 44d94994ab2fe4e6b3d0e79e8e44bd17c7fc180610bf22425c451062af6214e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--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] 29e77ebda46f1c8f75ba50fa60797b698600a1d903398f970f9c2b53a8fdcab8
[INFO] running `Command { std: "docker" "start" "-a" "29e77ebda46f1c8f75ba50fa60797b698600a1d903398f970f9c2b53a8fdcab8", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking buffered_offset_reader v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.29s
[INFO] running `Command { std: "docker" "inspect" "29e77ebda46f1c8f75ba50fa60797b698600a1d903398f970f9c2b53a8fdcab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29e77ebda46f1c8f75ba50fa60797b698600a1d903398f970f9c2b53a8fdcab8", kill_on_drop: false }`
[INFO] [stdout] 29e77ebda46f1c8f75ba50fa60797b698600a1d903398f970f9c2b53a8fdcab8