[INFO] fetching crate mio-misc 1.0.0...
[INFO] checking mio-misc-1.0.0 against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] extracting crate mio-misc 1.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mio-misc 1.0.0 on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mio-misc 1.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mio-misc 1.0.0
[INFO] tweaked toml for crates.io crate mio-misc 1.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--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] 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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94dba65e7c00208020c70524ee8a45f219356e6bed57b6d3bb1a91244bec2817
[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" "94dba65e7c00208020c70524ee8a45f219356e6bed57b6d3bb1a91244bec2817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94dba65e7c00208020c70524ee8a45f219356e6bed57b6d3bb1a91244bec2817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dba65e7c00208020c70524ee8a45f219356e6bed57b6d3bb1a91244bec2817", kill_on_drop: false }`
[INFO] [stdout] 94dba65e7c00208020c70524ee8a45f219356e6bed57b6d3bb1a91244bec2817
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20759d16a49e9ec7cdb5a48ad3ec1f40e8874ef72721c64855de86d6486516cf
[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" "20759d16a49e9ec7cdb5a48ad3ec1f40e8874ef72721c64855de86d6486516cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking mio-misc v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:100:32
[INFO] [stdout]     |
[INFO] [stdout] 100 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 100 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:117:32
[INFO] [stdout]     |
[INFO] [stdout] 117 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 117 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:125:32
[INFO] [stdout]     |
[INFO] [stdout] 125 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 125 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:132:33
[INFO] [stdout]     |
[INFO] [stdout] 132 |     assert!(!events.is_empty(), EVENTS_EXIST_TEXT);
[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] 132 |     assert!(!events.is_empty(), "{}", EVENTS_EXIST_TEXT);
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:160:32
[INFO] [stdout]     |
[INFO] [stdout] 160 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 160 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:177:32
[INFO] [stdout]     |
[INFO] [stdout] 177 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 177 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:185:32
[INFO] [stdout]     |
[INFO] [stdout] 185 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 185 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:192:33
[INFO] [stdout]     |
[INFO] [stdout] 192 |     assert!(!events.is_empty(), EVENTS_EXIST_TEXT);
[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] 192 |     assert!(!events.is_empty(), "{}", EVENTS_EXIST_TEXT);
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> test/test_poll_channel.rs:250:32
[INFO] [stdout]     |
[INFO] [stdout] 250 |     assert!(events.is_empty(), NO_EVENTS_TEXT);
[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] 250 |     assert!(events.is_empty(), "{}", NO_EVENTS_TEXT);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.96s
[INFO] running `Command { std: "docker" "inspect" "20759d16a49e9ec7cdb5a48ad3ec1f40e8874ef72721c64855de86d6486516cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20759d16a49e9ec7cdb5a48ad3ec1f40e8874ef72721c64855de86d6486516cf", kill_on_drop: false }`
[INFO] [stdout] 20759d16a49e9ec7cdb5a48ad3ec1f40e8874ef72721c64855de86d6486516cf