[INFO] fetching crate object 0.21.1...
[INFO] checking object-0.21.1 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate object 0.21.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate object 0.21.1 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate object 0.21.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate object 0.21.1
[INFO] tweaked toml for crates.io crate object 0.21.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate object 0.21.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab9f8f937441714ffd6c53f5b8d26aade7b0a3762b87d4a0412d2f9eef48bc12
[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" "ab9f8f937441714ffd6c53f5b8d26aade7b0a3762b87d4a0412d2f9eef48bc12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab9f8f937441714ffd6c53f5b8d26aade7b0a3762b87d4a0412d2f9eef48bc12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab9f8f937441714ffd6c53f5b8d26aade7b0a3762b87d4a0412d2f9eef48bc12", kill_on_drop: false }`
[INFO] [stdout] ab9f8f937441714ffd6c53f5b8d26aade7b0a3762b87d4a0412d2f9eef48bc12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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] de65f94957c72dad2d94704194e433df12b29b9e313178309073ee3e3a03ed6f
[INFO] running `Command { std: "docker" "start" "-a" "de65f94957c72dad2d94704194e433df12b29b9e313178309073ee3e3a03ed6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking wasmparser v0.57.0
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking object v0.21.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.74s
[INFO] running `Command { std: "docker" "inspect" "de65f94957c72dad2d94704194e433df12b29b9e313178309073ee3e3a03ed6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de65f94957c72dad2d94704194e433df12b29b9e313178309073ee3e3a03ed6f", kill_on_drop: false }`
[INFO] [stdout] de65f94957c72dad2d94704194e433df12b29b9e313178309073ee3e3a03ed6f