[INFO] fetching crate xtra 0.5.0-beta.4...
[INFO] checking xtra-0.5.0-beta.4 against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] extracting crate xtra 0.5.0-beta.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate xtra 0.5.0-beta.4 on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xtra 0.5.0-beta.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate xtra 0.5.0-beta.4
[INFO] tweaked toml for crates.io crate xtra 0.5.0-beta.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate xtra 0.5.0-beta.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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] efde4e3719438fb0e6f9e3ac254ebe03525445531747f417a0f5734205d61616
[INFO] running `Command { std: "docker" "start" "-a" "efde4e3719438fb0e6f9e3ac254ebe03525445531747f417a0f5734205d61616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efde4e3719438fb0e6f9e3ac254ebe03525445531747f417a0f5734205d61616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efde4e3719438fb0e6f9e3ac254ebe03525445531747f417a0f5734205d61616", kill_on_drop: false }`
[INFO] [stdout] efde4e3719438fb0e6f9e3ac254ebe03525445531747f417a0f5734205d61616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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] 236c502605f667f4e3bbb500d01af71a002a16b6867a3eef2e5d0742909c6b6b
[INFO] running `Command { std: "docker" "start" "-a" "236c502605f667f4e3bbb500d01af71a002a16b6867a3eef2e5d0742909c6b6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking cache-padded v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking vec-arena v0.5.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking easy-parallel v3.1.0
[INFO] [stderr]     Checking futures-lite v0.1.10
[INFO] [stderr]     Checking concurrent-queue v1.1.1
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking async-channel v1.2.0
[INFO] [stderr]     Checking blocking v0.5.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-io v0.1.6
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Checking smol v0.3.3
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking xtra v0.5.0-beta.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.03s
[INFO] running `Command { std: "docker" "inspect" "236c502605f667f4e3bbb500d01af71a002a16b6867a3eef2e5d0742909c6b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "236c502605f667f4e3bbb500d01af71a002a16b6867a3eef2e5d0742909c6b6b", kill_on_drop: false }`
[INFO] [stdout] 236c502605f667f4e3bbb500d01af71a002a16b6867a3eef2e5d0742909c6b6b