[INFO] fetching crate uu_echo 0.0.1...
[INFO] checking uu_echo-0.0.1 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate uu_echo 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate uu_echo 0.0.1 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uu_echo 0.0.1
[INFO] finished tweaking crates.io crate uu_echo 0.0.1
[INFO] tweaked toml for crates.io crate uu_echo 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate uu_echo 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ce4dbbe8068f6373921a4a457db1ce27e7d0fe94e90f6f84b9effea84a76605
[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" "2ce4dbbe8068f6373921a4a457db1ce27e7d0fe94e90f6f84b9effea84a76605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ce4dbbe8068f6373921a4a457db1ce27e7d0fe94e90f6f84b9effea84a76605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ce4dbbe8068f6373921a4a457db1ce27e7d0fe94e90f6f84b9effea84a76605", kill_on_drop: false }`
[INFO] [stdout] 2ce4dbbe8068f6373921a4a457db1ce27e7d0fe94e90f6f84b9effea84a76605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93f79049fbf8a64beb7c4f84ea305e40927bacee1ad1e7c3e67ddf8c33258335
[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" "93f79049fbf8a64beb7c4f84ea305e40927bacee1ad1e7c3e67ddf8c33258335", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking wild v2.0.1
[INFO] [stderr]     Checking dunce v1.0.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]     Checking uucore v0.0.4
[INFO] [stderr]    Compiling uucore_procs v0.0.4
[INFO] [stderr]     Checking uu_echo v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.30s
[INFO] running `Command { std: "docker" "inspect" "93f79049fbf8a64beb7c4f84ea305e40927bacee1ad1e7c3e67ddf8c33258335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93f79049fbf8a64beb7c4f84ea305e40927bacee1ad1e7c3e67ddf8c33258335", kill_on_drop: false }`
[INFO] [stdout] 93f79049fbf8a64beb7c4f84ea305e40927bacee1ad1e7c3e67ddf8c33258335