[INFO] fetching crate supervisor-rs 0.8.2...
[INFO] checking supervisor-rs-0.8.2 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate supervisor-rs 0.8.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate supervisor-rs 0.8.2 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate supervisor-rs 0.8.2
[INFO] finished tweaking crates.io crate supervisor-rs 0.8.2
[INFO] tweaked toml for crates.io crate supervisor-rs 0.8.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate supervisor-rs 0.8.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssh2 v0.9.1
[INFO] [stderr]   Downloaded libssh2-sys v0.2.21
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 380dc4e249d6b1ba42d8ff5b7893585bc19006fe0967c3afdaca4ae2cc583941
[INFO] running `Command { std: "docker" "start" "-a" "380dc4e249d6b1ba42d8ff5b7893585bc19006fe0967c3afdaca4ae2cc583941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "380dc4e249d6b1ba42d8ff5b7893585bc19006fe0967c3afdaca4ae2cc583941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "380dc4e249d6b1ba42d8ff5b7893585bc19006fe0967c3afdaca4ae2cc583941", kill_on_drop: false }`
[INFO] [stdout] 380dc4e249d6b1ba42d8ff5b7893585bc19006fe0967c3afdaca4ae2cc583941
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3496eabb94387c7a53dbab8c4468c79b8de48adb5c5cd8cf1357f2920e93ca77
[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" "3496eabb94387c7a53dbab8c4468c79b8de48adb5c5cd8cf1357f2920e93ca77", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ssh2 v0.9.1
[INFO] [stderr]     Checking supervisor-rs v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `command_argvs`
[INFO] [stdout]    --> src/child.rs:246:8
[INFO] [stdout]     |
[INFO] [stdout] 246 |     fn command_argvs() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_ls`
[INFO] [stdout]    --> src/child.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn run_ls() {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.36s
[INFO] running `Command { std: "docker" "inspect" "3496eabb94387c7a53dbab8c4468c79b8de48adb5c5cd8cf1357f2920e93ca77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3496eabb94387c7a53dbab8c4468c79b8de48adb5c5cd8cf1357f2920e93ca77", kill_on_drop: false }`
[INFO] [stdout] 3496eabb94387c7a53dbab8c4468c79b8de48adb5c5cd8cf1357f2920e93ca77