[INFO] fetching crate flowsamples 0.30.0...
[INFO] checking flowsamples-0.30.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate flowsamples 0.30.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flowsamples 0.30.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowsamples 0.30.0
[INFO] finished tweaking crates.io crate flowsamples 0.30.0
[INFO] tweaked toml for crates.io crate flowsamples 0.30.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate flowsamples 0.30.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4998b55aa7efff468edde78862becf2e89dd4247461fd20bb53558d10aaa718
[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" "c4998b55aa7efff468edde78862becf2e89dd4247461fd20bb53558d10aaa718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4998b55aa7efff468edde78862becf2e89dd4247461fd20bb53558d10aaa718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4998b55aa7efff468edde78862becf2e89dd4247461fd20bb53558d10aaa718", kill_on_drop: false }`
[INFO] [stdout] c4998b55aa7efff468edde78862becf2e89dd4247461fd20bb53558d10aaa718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1acc32961d0fc9a92b6f21a7d6c0bfb74c4787958e38cf0278e0661cfffbe88d
[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" "1acc32961d0fc9a92b6f21a7d6c0bfb74c4787958e38cf0278e0661cfffbe88d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling simpath v1.4.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]     Checking memory_units v0.3.0
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[INFO] [stderr]     Checking serde_json v1.0.59
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[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling backtrace v0.3.54
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking flow_impl v0.21.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
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[INFO] [stderr]    Compiling serde_yaml v0.8.14
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]    Compiling flow_impl_derive v0.21.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.10
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking provider v0.25.0
[INFO] [stderr]     Checking flowrstructs v0.25.0
[INFO] [stderr]    Compiling flowc v0.25.0
[INFO] [stderr]    Compiling flowstdlib v0.25.0
[INFO] [stderr]    Compiling flowsamples v0.30.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking flowr v0.25.0
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> main.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 | /                     format!("Sample {:?} {:?} does not match {:?}",
[INFO] [stdout] 154 | |                             sample_dir.file_name().unwrap(),
[INFO] [stdout] 155 | |                             actual.file_name().unwrap(),
[INFO] [stdout] 156 | |                             expected.file_name().unwrap()));
[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] 153 |                     "Sample {:?} {:?} does not match {:?}",
[INFO] [stdout] 154 |                             sample_dir.file_name().unwrap(),
[INFO] [stdout] 155 |                             actual.file_name().unwrap(),
[INFO] [stdout] 156 |                             expected.file_name().unwrap());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 21s
[INFO] running `Command { std: "docker" "inspect" "1acc32961d0fc9a92b6f21a7d6c0bfb74c4787958e38cf0278e0661cfffbe88d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1acc32961d0fc9a92b6f21a7d6c0bfb74c4787958e38cf0278e0661cfffbe88d", kill_on_drop: false }`
[INFO] [stdout] 1acc32961d0fc9a92b6f21a7d6c0bfb74c4787958e38cf0278e0661cfffbe88d