[INFO] fetching crate supervisor-rs 0.6.3...
[INFO] checking supervisor-rs-0.6.3 against beta for pr-78714
[INFO] extracting crate supervisor-rs 0.6.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate supervisor-rs 0.6.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate supervisor-rs 0.6.3
[INFO] finished tweaking crates.io crate supervisor-rs 0.6.3
[INFO] tweaked toml for crates.io crate supervisor-rs 0.6.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate supervisor-rs 0.6.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8418401bbffcd7129f3c93fa701cac6625acd3ebb3b01b5cdc56e7e6a23697f8
[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" "8418401bbffcd7129f3c93fa701cac6625acd3ebb3b01b5cdc56e7e6a23697f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8418401bbffcd7129f3c93fa701cac6625acd3ebb3b01b5cdc56e7e6a23697f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8418401bbffcd7129f3c93fa701cac6625acd3ebb3b01b5cdc56e7e6a23697f8", kill_on_drop: false }`
[INFO] [stdout] 8418401bbffcd7129f3c93fa701cac6625acd3ebb3b01b5cdc56e7e6a23697f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4805ff7cf8da48f67540b9bceabc22afc322d570705cba83028567f1ba6554c
[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" "d4805ff7cf8da48f67540b9bceabc22afc322d570705cba83028567f1ba6554c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking openssl-sys v0.9.58
[INFO] [stderr]     Checking openssl v0.10.30
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking supervisor-rs v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/client.rs:284:33
[INFO] [stdout]     |
[INFO] [stdout] 284 |             comm.err().unwrap().description(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 |         let mut case0 = vec![
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:309:13
[INFO] [stdout]     |
[INFO] [stdout] 309 |         let mut case1 = vec!["restart", "child", "with", "key", "on", "host1, host2"]; // second hosts format
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:334:13
[INFO] [stdout]     |
[INFO] [stdout] 334 |         let mut case0 = vec![
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.33s
[INFO] running `Command { std: "docker" "inspect" "d4805ff7cf8da48f67540b9bceabc22afc322d570705cba83028567f1ba6554c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4805ff7cf8da48f67540b9bceabc22afc322d570705cba83028567f1ba6554c", kill_on_drop: false }`
[INFO] [stdout] d4805ff7cf8da48f67540b9bceabc22afc322d570705cba83028567f1ba6554c