[INFO] fetching crate a2 0.5.3...
[INFO] checking a2-0.5.3 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate a2 0.5.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate a2 0.5.3 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate a2 0.5.3
[INFO] finished tweaking crates.io crate a2 0.5.3
[INFO] tweaked toml for crates.io crate a2 0.5.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate a2 0.5.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1016a4ed2ea071cc3811d3ef20c6f0a01fd5bd0f34d3af481ad34981c6db06bd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1016a4ed2ea071cc3811d3ef20c6f0a01fd5bd0f34d3af481ad34981c6db06bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1016a4ed2ea071cc3811d3ef20c6f0a01fd5bd0f34d3af481ad34981c6db06bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1016a4ed2ea071cc3811d3ef20c6f0a01fd5bd0f34d3af481ad34981c6db06bd", kill_on_drop: false }`
[INFO] [stdout] 1016a4ed2ea071cc3811d3ef20c6f0a01fd5bd0f34d3af481ad34981c6db06bd
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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] 27795fef5b6f93a7f16b245eaf0267530323a67d68cc6e1f1fd26275bf4dacf4
[INFO] running `Command { std: "docker" "start" "-a" "27795fef5b6f93a7f16b245eaf0267530323a67d68cc6e1f1fd26275bf4dacf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]    Compiling cc v1.0.53
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling proc-macro-hack v0.4.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling ring v0.16.13
[INFO] [stderr]    Compiling openssl-sys v0.9.56
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling indoc-impl v0.2.8
[INFO] [stderr]     Checking erased-serde v0.3.11
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking indoc v0.2.8
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking pin-project v0.4.16
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.12.2
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking hyper v0.13.5
[INFO] [stderr]     Checking hyper-alpn v0.2.1
[INFO] [stderr]     Checking a2 v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "27795fef5b6f93a7f16b245eaf0267530323a67d68cc6e1f1fd26275bf4dacf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27795fef5b6f93a7f16b245eaf0267530323a67d68cc6e1f1fd26275bf4dacf4", kill_on_drop: false }`
[INFO] [stdout] 27795fef5b6f93a7f16b245eaf0267530323a67d68cc6e1f1fd26275bf4dacf4