[INFO] crate tagref 1.2.1 is already in cache
[INFO] checking tagref-1.2.1 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate tagref 1.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tagref 1.2.1 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tagref 1.2.1
[INFO] finished tweaking crates.io crate tagref 1.2.1
[INFO] tweaked toml for crates.io crate tagref 1.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate tagref 1.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efd0848b268a35e203b08eddc7c3d627a10f293118915f27d9ebca03bc4b5fed
[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" "efd0848b268a35e203b08eddc7c3d627a10f293118915f27d9ebca03bc4b5fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efd0848b268a35e203b08eddc7c3d627a10f293118915f27d9ebca03bc4b5fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd0848b268a35e203b08eddc7c3d627a10f293118915f27d9ebca03bc4b5fed", kill_on_drop: false }`
[INFO] [stdout] efd0848b268a35e203b08eddc7c3d627a10f293118915f27d9ebca03bc4b5fed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 594d4b60f15310b27bb3254855f704cdc14f6578b54b310f824a5ff3dcc1b0bf
[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" "594d4b60f15310b27bb3254855f704cdc14f6578b54b310f824a5ff3dcc1b0bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking tagref v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.82s
[INFO] running `Command { std: "docker" "inspect" "594d4b60f15310b27bb3254855f704cdc14f6578b54b310f824a5ff3dcc1b0bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594d4b60f15310b27bb3254855f704cdc14f6578b54b310f824a5ff3dcc1b0bf", kill_on_drop: false }`
[INFO] [stdout] 594d4b60f15310b27bb3254855f704cdc14f6578b54b310f824a5ff3dcc1b0bf