[INFO] fetching crate mockers 0.21.0...
[INFO] checking mockers-0.21.0 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate mockers 0.21.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mockers 0.21.0 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 mockers 0.21.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mockers 0.21.0
[INFO] tweaked toml for crates.io crate mockers 0.21.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de499f2dfb47b2c8a08998fa3d5bf5feab2a312829f3a6345652e2f57c8aaf68
[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" "de499f2dfb47b2c8a08998fa3d5bf5feab2a312829f3a6345652e2f57c8aaf68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de499f2dfb47b2c8a08998fa3d5bf5feab2a312829f3a6345652e2f57c8aaf68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de499f2dfb47b2c8a08998fa3d5bf5feab2a312829f3a6345652e2f57c8aaf68", kill_on_drop: false }`
[INFO] [stdout] de499f2dfb47b2c8a08998fa3d5bf5feab2a312829f3a6345652e2f57c8aaf68
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73860f85b9b4219ce4b50307c1eaa9a38c45ff16cb04f1cde28ebd1a35f0cfc0
[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" "73860f85b9b4219ce4b50307c1eaa9a38c45ff16cb04f1cde28ebd1a35f0cfc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-quote-impl v0.2.2
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling indoc v0.3.6
[INFO] [stderr]    Compiling proc-quote v0.2.2
[INFO] [stderr]    Compiling select-rustc v0.1.2
[INFO] [stderr]    Compiling mockers_derive v0.21.0
[INFO] [stderr]     Checking mockers v0.21.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.47s
[INFO] running `Command { std: "docker" "inspect" "73860f85b9b4219ce4b50307c1eaa9a38c45ff16cb04f1cde28ebd1a35f0cfc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73860f85b9b4219ce4b50307c1eaa9a38c45ff16cb04f1cde28ebd1a35f0cfc0", kill_on_drop: false }`
[INFO] [stdout] 73860f85b9b4219ce4b50307c1eaa9a38c45ff16cb04f1cde28ebd1a35f0cfc0