[INFO] fetching crate qmc 2.14.0...
[INFO] checking qmc-2.14.0 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate qmc 2.14.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate qmc 2.14.0 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qmc 2.14.0
[INFO] finished tweaking crates.io crate qmc 2.14.0
[INFO] tweaked toml for crates.io crate qmc 2.14.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate qmc 2.14.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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] 3e891ba1e2c873060fd815445846411e7c633ce4b87b9fcc55e1d46202b6fb8c
[INFO] running `Command { std: "docker" "start" "-a" "3e891ba1e2c873060fd815445846411e7c633ce4b87b9fcc55e1d46202b6fb8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e891ba1e2c873060fd815445846411e7c633ce4b87b9fcc55e1d46202b6fb8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e891ba1e2c873060fd815445846411e7c633ce4b87b9fcc55e1d46202b6fb8c", kill_on_drop: false }`
[INFO] [stdout] 3e891ba1e2c873060fd815445846411e7c633ce4b87b9fcc55e1d46202b6fb8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 604785fb7e9e206e5e932c3df1b84eaef002a01938fbf3a2b3498b40d03ebe2b
[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" "604785fb7e9e206e5e932c3df1b84eaef002a01938fbf3a2b3498b40d03ebe2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking smallvec v1.6.0
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_isaac v0.3.0
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking qmc v2.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.13s
[INFO] running `Command { std: "docker" "inspect" "604785fb7e9e206e5e932c3df1b84eaef002a01938fbf3a2b3498b40d03ebe2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "604785fb7e9e206e5e932c3df1b84eaef002a01938fbf3a2b3498b40d03ebe2b", kill_on_drop: false }`
[INFO] [stdout] 604785fb7e9e206e5e932c3df1b84eaef002a01938fbf3a2b3498b40d03ebe2b