[INFO] fetching crate mun_target 0.2.0...
[INFO] checking mun_target-0.2.0 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate mun_target 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mun_target 0.2.0 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mun_target 0.2.0
[INFO] finished tweaking crates.io crate mun_target 0.2.0
[INFO] tweaked toml for crates.io crate mun_target 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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] 13e088af147b914a2b2a67a8ae7754b8a3bb8f2e2bea9538151547915c6f13eb
[INFO] running `Command { std: "docker" "start" "-a" "13e088af147b914a2b2a67a8ae7754b8a3bb8f2e2bea9538151547915c6f13eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13e088af147b914a2b2a67a8ae7754b8a3bb8f2e2bea9538151547915c6f13eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e088af147b914a2b2a67a8ae7754b8a3bb8f2e2bea9538151547915c6f13eb", kill_on_drop: false }`
[INFO] [stdout] 13e088af147b914a2b2a67a8ae7754b8a3bb8f2e2bea9538151547915c6f13eb
[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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bcafa4bf928da135a78bb38509d1a3f626e8749e0b39e89b5a60ed22305eac7
[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" "5bcafa4bf928da135a78bb38509d1a3f626e8749e0b39e89b5a60ed22305eac7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]    Compiling mun_target v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking insta v0.16.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.34s
[INFO] running `Command { std: "docker" "inspect" "5bcafa4bf928da135a78bb38509d1a3f626e8749e0b39e89b5a60ed22305eac7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bcafa4bf928da135a78bb38509d1a3f626e8749e0b39e89b5a60ed22305eac7", kill_on_drop: false }`
[INFO] [stdout] 5bcafa4bf928da135a78bb38509d1a3f626e8749e0b39e89b5a60ed22305eac7