[INFO] fetching crate postoffice 0.0.24...
[INFO] checking postoffice-0.0.24 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] extracting crate postoffice 0.0.24 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate postoffice 0.0.24 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate postoffice 0.0.24
[INFO] finished tweaking crates.io crate postoffice 0.0.24
[INFO] tweaked toml for crates.io crate postoffice 0.0.24 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate postoffice 0.0.24 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4cd4cf1d168e7d3a9cba4b3384bf27073e53f68ca1da700d12643ace792f9b5
[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" "c4cd4cf1d168e7d3a9cba4b3384bf27073e53f68ca1da700d12643ace792f9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4cd4cf1d168e7d3a9cba4b3384bf27073e53f68ca1da700d12643ace792f9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4cd4cf1d168e7d3a9cba4b3384bf27073e53f68ca1da700d12643ace792f9b5", kill_on_drop: false }`
[INFO] [stdout] c4cd4cf1d168e7d3a9cba4b3384bf27073e53f68ca1da700d12643ace792f9b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26d5472a635a76621cfee9e5c87cc298a52acd9c23b57642a70a27f147055f77
[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" "26d5472a635a76621cfee9e5c87cc298a52acd9c23b57642a70a27f147055f77", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking json v0.12.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking universal-hash v0.3.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking aead v0.2.0
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking polyval v0.3.3
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking ghash v0.2.3
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]     Checking aes-gcm v0.3.0
[INFO] [stderr]     Checking postoffice v0.0.24 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `close_collector`
[INFO] [stdout]   --> src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn close_collector(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_collector`
[INFO] [stdout]   --> src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn close_collector(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.00s
[INFO] running `Command { std: "docker" "inspect" "26d5472a635a76621cfee9e5c87cc298a52acd9c23b57642a70a27f147055f77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d5472a635a76621cfee9e5c87cc298a52acd9c23b57642a70a27f147055f77", kill_on_drop: false }`
[INFO] [stdout] 26d5472a635a76621cfee9e5c87cc298a52acd9c23b57642a70a27f147055f77