[INFO] fetching crate polyio 0.9.0...
[INFO] checking polyio-0.9.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate polyio 0.9.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate polyio 0.9.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polyio 0.9.0
[INFO] finished tweaking crates.io crate polyio 0.9.0
[INFO] tweaked toml for crates.io crate polyio 0.9.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http-endpoint v0.4.0
[INFO] [stderr]   Downloaded num-decimal v0.2.3
[INFO] [stderr]   Downloaded time-util v0.3.3
[INFO] [stderr]   Downloaded websocket-util v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e2f4e6e1f13d8757394d3f601529be7dd428cd049f5a7f84bbe18fc786023b9
[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" "8e2f4e6e1f13d8757394d3f601529be7dd428cd049f5a7f84bbe18fc786023b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e2f4e6e1f13d8757394d3f601529be7dd428cd049f5a7f84bbe18fc786023b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2f4e6e1f13d8757394d3f601529be7dd428cd049f5a7f84bbe18fc786023b9", kill_on_drop: false }`
[INFO] [stdout] 8e2f4e6e1f13d8757394d3f601529be7dd428cd049f5a7f84bbe18fc786023b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b2f26a12b30a2499b04a923a212fdc7f78826bece26af7d8ad9042ddeb36dc
[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" "f1b2f26a12b30a2499b04a923a212fdc7f78826bece26af7d8ad9042ddeb36dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking input_buffer v0.4.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking http-body v0.4.1
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling test-env-log v0.2.7
[INFO] [stderr]     Checking sha-1 v0.9.4
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking http-endpoint v0.4.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking tungstenite v0.12.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking num-decimal v0.2.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.17
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper v0.14.7
[INFO] [stderr]     Checking tokio-tungstenite v0.13.0
[INFO] [stderr]     Checking websocket-util v0.7.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking time-util v0.3.3
[INFO] [stderr]     Checking polyio v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `safe_packed_borrows` has been renamed to `unaligned_references`
[INFO] [stdout]   --> src/lib.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   safe_packed_borrows,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^ help: use the new name: `unaligned_references`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   renamed_and_removed_lints,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_packed_borrows` has been renamed to `unaligned_references`
[INFO] [stdout]   --> src/lib.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   safe_packed_borrows,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^ help: use the new name: `unaligned_references`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   renamed_and_removed_lints,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/events/handshake.rs:128:28
[INFO] [stdout]     |
[INFO] [stdout] 128 |   debug_assert!(count > 0, count);
[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] 128 |   debug_assert!(count > 0, "{}", count);
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/api/aggregates.rs:178:7
[INFO] [stdout]     |
[INFO] [stdout] 178 |       aggregate.volume
[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] 178 |       "{}", aggregate.volume
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/api/aggregates.rs:222:7
[INFO] [stdout]     |
[INFO] [stdout] 222 |       aggregate.volume
[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] 222 |       "{}", aggregate.volume
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/api/ticker_news.rs:97:31
[INFO] [stdout]    |
[INFO] [stdout] 97 |     assert!(!news.is_empty(), news);
[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] 97 |     assert!(!news.is_empty(), "{}", news);
[INFO] [stdout]    |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/api/ticker_news.rs:100:59
[INFO] [stdout]     |
[INFO] [stdout] 100 |       assert!(item.symbols.contains(&"AAPL".to_string()), item);
[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] 100 |       assert!(item.symbols.contains(&"AAPL".to_string()), "{}", item);
[INFO] [stdout]     |                                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/events/handshake.rs:128:28
[INFO] [stdout]     |
[INFO] [stdout] 128 |   debug_assert!(count > 0, count);
[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] 128 |   debug_assert!(count > 0, "{}", count);
[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 1m 02s
[INFO] running `Command { std: "docker" "inspect" "f1b2f26a12b30a2499b04a923a212fdc7f78826bece26af7d8ad9042ddeb36dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b2f26a12b30a2499b04a923a212fdc7f78826bece26af7d8ad9042ddeb36dc", kill_on_drop: false }`
[INFO] [stdout] f1b2f26a12b30a2499b04a923a212fdc7f78826bece26af7d8ad9042ddeb36dc