[INFO] fetching crate completion 0.1.0...
[INFO] checking completion-0.1.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate completion 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate completion 0.1.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate completion 0.1.0
[INFO] finished tweaking crates.io crate completion 0.1.0
[INFO] tweaked toml for crates.io crate completion 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95a88e3b3a2a35fde1b448690b11638fb23550780029bd96dbf489121ec2c2a4
[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" "95a88e3b3a2a35fde1b448690b11638fb23550780029bd96dbf489121ec2c2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95a88e3b3a2a35fde1b448690b11638fb23550780029bd96dbf489121ec2c2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a88e3b3a2a35fde1b448690b11638fb23550780029bd96dbf489121ec2c2a4", kill_on_drop: false }`
[INFO] [stdout] 95a88e3b3a2a35fde1b448690b11638fb23550780029bd96dbf489121ec2c2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07a6b7438cf976f36e7bc08c27c6bd4c02a4ea5372c30d42ca6d58ea2d1483fd
[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" "07a6b7438cf976f36e7bc08c27c6bd4c02a4ea5372c30d42ca6d58ea2d1483fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking completion-core v0.1.0
[INFO] [stderr]     Checking completion-io v0.1.0
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]    Compiling completion-macro v0.1.0
[INFO] [stderr]     Checking completion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/future/mod.rs:239:45
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 (Err(output1), _) => panic!(output1),
[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] 239 |                 (Err(output1), _) => panic!("{}", output1),
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 (Err(output1), _) => std::panic::panic_any(output1),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/future/mod.rs:240:45
[INFO] [stdout]     |
[INFO] [stdout] 240 |                 (_, Err(output2)) => panic!(output2),
[INFO] [stdout]     |                                             ^^^^^^^
[INFO] [stdout]     |
[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] 240 |                 (_, Err(output2)) => panic!("{}", output2),
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 240 |                 (_, Err(output2)) => std::panic::panic_any(output2),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/future/mod.rs:239:45
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 (Err(output1), _) => panic!(output1),
[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] 239 |                 (Err(output1), _) => panic!("{}", output1),
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 (Err(output1), _) => std::panic::panic_any(output1),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/future/mod.rs:240:45
[INFO] [stdout]     |
[INFO] [stdout] 240 |                 (_, Err(output2)) => panic!(output2),
[INFO] [stdout]     |                                             ^^^^^^^
[INFO] [stdout]     |
[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] 240 |                 (_, Err(output2)) => panic!("{}", output2),
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 240 |                 (_, Err(output2)) => std::panic::panic_any(output2),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.37s
[INFO] running `Command { std: "docker" "inspect" "07a6b7438cf976f36e7bc08c27c6bd4c02a4ea5372c30d42ca6d58ea2d1483fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a6b7438cf976f36e7bc08c27c6bd4c02a4ea5372c30d42ca6d58ea2d1483fd", kill_on_drop: false }`
[INFO] [stdout] 07a6b7438cf976f36e7bc08c27c6bd4c02a4ea5372c30d42ca6d58ea2d1483fd