[INFO] fetching crate fup 0.7.7...
[INFO] checking fup-0.7.7 against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] extracting crate fup 0.7.7 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fup 0.7.7 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 fup 0.7.7
[INFO] finished tweaking crates.io crate fup 0.7.7
[INFO] tweaked toml for crates.io crate fup 0.7.7 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate fup 0.7.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "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] b94cadf74da2becb99b4631875b1933e54a32a79327f08d77f386b0ba647c14f
[INFO] running `Command { std: "docker" "start" "-a" "b94cadf74da2becb99b4631875b1933e54a32a79327f08d77f386b0ba647c14f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b94cadf74da2becb99b4631875b1933e54a32a79327f08d77f386b0ba647c14f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b94cadf74da2becb99b4631875b1933e54a32a79327f08d77f386b0ba647c14f", kill_on_drop: false }`
[INFO] [stdout] b94cadf74da2becb99b4631875b1933e54a32a79327f08d77f386b0ba647c14f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--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] a3d7552179535b55ff902ff4970a5947a966011be01131a89ebb89f6d8f47eec
[INFO] running `Command { std: "docker" "start" "-a" "a3d7552179535b55ff902ff4970a5947a966011be01131a89ebb89f6d8f47eec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling standback v0.2.8
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]    Compiling time v0.2.14
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking fup v0.7.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/filterclass.rs:76:37
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         _ => panic!(name.to_owned()),
[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] 76 |                         _ => panic!("{}", name.to_owned()),
[INFO] [stdout]    |                                     ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         _ => std::panic::panic_any(name.to_owned()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/filterclass.rs:96:37
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         _ => panic!(name.to_owned()),
[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] 96 |                         _ => panic!("{}", name.to_owned()),
[INFO] [stdout]    |                                     ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         _ => std::panic::panic_any(name.to_owned()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.17s
[INFO] running `Command { std: "docker" "inspect" "a3d7552179535b55ff902ff4970a5947a966011be01131a89ebb89f6d8f47eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d7552179535b55ff902ff4970a5947a966011be01131a89ebb89f6d8f47eec", kill_on_drop: false }`
[INFO] [stdout] a3d7552179535b55ff902ff4970a5947a966011be01131a89ebb89f6d8f47eec