[INFO] fetching crate rogcat 0.4.1...
[INFO] checking rogcat-0.4.1 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate rogcat 0.4.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rogcat 0.4.1 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rogcat 0.4.1
[INFO] finished tweaking crates.io crate rogcat 0.4.1
[INFO] tweaked toml for crates.io crate rogcat 0.4.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rogcat 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d23ee4aed470d745fc1dc563ffad17c76de4810d0b1382ab35c40f682d3a51b4
[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" "d23ee4aed470d745fc1dc563ffad17c76de4810d0b1382ab35c40f682d3a51b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d23ee4aed470d745fc1dc563ffad17c76de4810d0b1382ab35c40f682d3a51b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23ee4aed470d745fc1dc563ffad17c76de4810d0b1382ab35c40f682d3a51b4", kill_on_drop: false }`
[INFO] [stdout] d23ee4aed470d745fc1dc563ffad17c76de4810d0b1382ab35c40f682d3a51b4
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a084e431474065bfc147154ebfce57ffcb93a0d8fe0584507fdd10fea0ffb971
[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" "a084e431474065bfc147154ebfce57ffcb93a0d8fe0584507fdd10fea0ffb971", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
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[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling serde v1.0.91
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[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.14
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[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking unicode-normalization v0.1.8
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[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling rand_pcg v0.1.2
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[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tokio-executor v0.1.7
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[INFO] [stderr]     Checking libflate v0.1.22
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[INFO] [stderr]     Checking tokio-serial v3.2.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]     Checking config v0.9.3
[INFO] [stderr]     Checking rogcat v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `child`
[INFO] [stdout]   --> src/reader.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     child: Option<Child>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `child`
[INFO] [stdout]   --> src/reader.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     child: Option<Child>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests/system.rs:41:71
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let result = run_rogcat(&cmd, None).unwrap_or_else(|_| panic!(cmd.join(" ")));
[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] 41 |         let result = run_rogcat(&cmd, None).unwrap_or_else(|_| panic!("{}", cmd.join(" ")));
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let result = run_rogcat(&cmd, None).unwrap_or_else(|_| std::panic::panic_any(cmd.join(" ")));
[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 1m 37s
[INFO] running `Command { std: "docker" "inspect" "a084e431474065bfc147154ebfce57ffcb93a0d8fe0584507fdd10fea0ffb971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a084e431474065bfc147154ebfce57ffcb93a0d8fe0584507fdd10fea0ffb971", kill_on_drop: false }`
[INFO] [stdout] a084e431474065bfc147154ebfce57ffcb93a0d8fe0584507fdd10fea0ffb971