[INFO] fetching crate lava_torrent 0.5.0...
[INFO] checking lava_torrent-0.5.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate lava_torrent 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate lava_torrent 0.5.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lava_torrent 0.5.0
[INFO] finished tweaking crates.io crate lava_torrent 0.5.0
[INFO] tweaked toml for crates.io crate lava_torrent 0.5.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", 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] e10dd219f979601b2a7efdc942c0e5f239f01fe8bee741f59ff3dd1032862923
[INFO] running `Command { std: "docker" "start" "-a" "e10dd219f979601b2a7efdc942c0e5f239f01fe8bee741f59ff3dd1032862923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e10dd219f979601b2a7efdc942c0e5f239f01fe8bee741f59ff3dd1032862923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e10dd219f979601b2a7efdc942c0e5f239f01fe8bee741f59ff3dd1032862923", kill_on_drop: false }`
[INFO] [stdout] e10dd219f979601b2a7efdc942c0e5f239f01fe8bee741f59ff3dd1032862923
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c96dcdb8376e6187553b3e76bcecd3fa2e06d619619a18b257c805c48e2a6c0d
[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" "c96dcdb8376e6187553b3e76bcecd3fa2e06d619619a18b257c805c48e2a6c0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[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 addr2line v0.14.1
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking lava_torrent v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tracker/mod.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 167 | |                 "Peer::from_bytes() expects 6 bytes, {} received.",
[INFO] [stdout] 168 | |                 bytes.len()
[INFO] [stdout] 169 | |             ))
[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]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 166 |             panic!(
[INFO] [stdout] 167 |                 "Peer::from_bytes() expects 6 bytes, {} received.",
[INFO] [stdout] 168 |                 bytes.len()
[INFO] [stdout] 169 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tracker/mod.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 167 | |                 "Peer::from_bytes() expects 6 bytes, {} received.",
[INFO] [stdout] 168 | |                 bytes.len()
[INFO] [stdout] 169 | |             ))
[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]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 166 |             panic!(
[INFO] [stdout] 167 |                 "Peer::from_bytes() expects 6 bytes, {} received.",
[INFO] [stdout] 168 |                 bytes.len()
[INFO] [stdout] 169 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.98s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c96dcdb8376e6187553b3e76bcecd3fa2e06d619619a18b257c805c48e2a6c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c96dcdb8376e6187553b3e76bcecd3fa2e06d619619a18b257c805c48e2a6c0d", kill_on_drop: false }`
[INFO] [stdout] c96dcdb8376e6187553b3e76bcecd3fa2e06d619619a18b257c805c48e2a6c0d