[INFO] fetching crate simple-socket 0.1.7...
[INFO] testing simple-socket-0.1.7 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate simple-socket 0.1.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate simple-socket 0.1.7 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-socket 0.1.7
[INFO] finished tweaking crates.io crate simple-socket 0.1.7
[INFO] tweaked toml for crates.io crate simple-socket 0.1.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate simple-socket 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded podo-core-driver v0.4.4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e952307f22aa2662e52dfdced612316878735762ede401110a6272d346c2da7a
[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" "e952307f22aa2662e52dfdced612316878735762ede401110a6272d346c2da7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e952307f22aa2662e52dfdced612316878735762ede401110a6272d346c2da7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e952307f22aa2662e52dfdced612316878735762ede401110a6272d346c2da7a", kill_on_drop: false }`
[INFO] [stdout] e952307f22aa2662e52dfdced612316878735762ede401110a6272d346c2da7a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ec212ac7f3eef2a64b219e479099904f9716e829e3b99908aca31bfc71d5ef
[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" "a5ec212ac7f3eef2a64b219e479099904f9716e829e3b99908aca31bfc71d5ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling simple-socket v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/client.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!(error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!("{}", error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => std::panic::panic_any(error),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.29s
[INFO] running `Command { std: "docker" "inspect" "a5ec212ac7f3eef2a64b219e479099904f9716e829e3b99908aca31bfc71d5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ec212ac7f3eef2a64b219e479099904f9716e829e3b99908aca31bfc71d5ef", kill_on_drop: false }`
[INFO] [stdout] a5ec212ac7f3eef2a64b219e479099904f9716e829e3b99908aca31bfc71d5ef
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", 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] 367121aa0a08a7a8af12ee577df9fd105be9dd39230a2e471dd1ef9f98bd1b23
[INFO] running `Command { std: "docker" "start" "-a" "367121aa0a08a7a8af12ee577df9fd105be9dd39230a2e471dd1ef9f98bd1b23", kill_on_drop: false }`
[INFO] [stderr]    Compiling podo-core-driver v0.4.4
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/client.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!(error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!("{}", error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => std::panic::panic_any(error),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling simple-socket v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/client.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!(error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => panic!("{}", error),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 160 |             Err(error) => std::panic::panic_any(error),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `Command { std: "docker" "inspect" "367121aa0a08a7a8af12ee577df9fd105be9dd39230a2e471dd1ef9f98bd1b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "367121aa0a08a7a8af12ee577df9fd105be9dd39230a2e471dd1ef9f98bd1b23", kill_on_drop: false }`
[INFO] [stdout] 367121aa0a08a7a8af12ee577df9fd105be9dd39230a2e471dd1ef9f98bd1b23
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", 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] 0e756e3d6c5ef2af1843f1e4a1941c40537643378ed15fc4c30a2479a98fbd7a
[INFO] running `Command { std: "docker" "start" "-a" "0e756e3d6c5ef2af1843f1e4a1941c40537643378ed15fc4c30a2479a98fbd7a", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/client.rs:160:34
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => panic!(error),
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => panic!("{}", error),
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => std::panic::panic_any(error),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/client.rs:160:34
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => panic!(error),
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => panic!("{}", error),
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Err(error) => std::panic::panic_any(error),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_socket-2b96b9dfa5785186)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests simple-socket
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0e756e3d6c5ef2af1843f1e4a1941c40537643378ed15fc4c30a2479a98fbd7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e756e3d6c5ef2af1843f1e4a1941c40537643378ed15fc4c30a2479a98fbd7a", kill_on_drop: false }`
[INFO] [stdout] 0e756e3d6c5ef2af1843f1e4a1941c40537643378ed15fc4c30a2479a98fbd7a