[INFO] fetching crate lab_grader 0.11.0...
[INFO] checking lab_grader-0.11.0 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate lab_grader 0.11.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate lab_grader 0.11.0 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lab_grader 0.11.0
[INFO] finished tweaking crates.io crate lab_grader 0.11.0
[INFO] tweaked toml for crates.io crate lab_grader 0.11.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate lab_grader 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 257c5cd65bb60f9c1525200963eaf8619f75a84f4e326f413ce240c9f0b107bc
[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" "257c5cd65bb60f9c1525200963eaf8619f75a84f4e326f413ce240c9f0b107bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "257c5cd65bb60f9c1525200963eaf8619f75a84f4e326f413ce240c9f0b107bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257c5cd65bb60f9c1525200963eaf8619f75a84f4e326f413ce240c9f0b107bc", kill_on_drop: false }`
[INFO] [stdout] 257c5cd65bb60f9c1525200963eaf8619f75a84f4e326f413ce240c9f0b107bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6a94690606fc66f45642e447a1421605af22ff6c2426f16ed3cfaa68ce7f98a
[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" "a6a94690606fc66f45642e447a1421605af22ff6c2426f16ed3cfaa68ce7f98a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
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[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking typeable v0.1.2
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[INFO] [stderr]     Checking foreign-types v0.3.2
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[INFO] [stderr]    Compiling unicode-normalization v0.1.13
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[INFO] [stderr]     Checking log v0.4.8
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[INFO] [stderr]     Checking aho-corasick v0.7.13
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[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling quote v0.6.13
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[INFO] [stderr]     Checking aes-soft v0.3.3
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[INFO] [stderr]    Compiling quote v1.0.7
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[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]     Checking iovec v0.1.4
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking tokio v0.2.21
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[INFO] [stderr]     Checking notify v4.0.15
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[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling devise_core v0.2.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling devise_codegen v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling devise v0.2.0
[INFO] [stderr]    Compiling pear v0.1.4
[INFO] [stderr]     Checking rocket_http v0.4.5
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[INFO] [stderr]     Checking pin-project v0.4.22
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[INFO] [stderr]     Checking serde v1.0.114
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[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking rocket_contrib v0.4.5
[INFO] [stderr]     Checking lab_grader v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/rubric.rs:312:50
[INFO] [stdout]     |
[INFO] [stdout] 312 |         fn test_fn(_: &TestData) -> bool { true };
[INFO] [stdout]     |                                                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[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]   --> examples/github_wiki.rs:70:26
[INFO] [stdout]    |
[INFO] [stdout] 70 |         Err(e) => panic!(format!("{}", e))
[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] 70 |         Err(e) => panic!("{}", e)
[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 24s
[INFO] running `Command { std: "docker" "inspect" "a6a94690606fc66f45642e447a1421605af22ff6c2426f16ed3cfaa68ce7f98a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a94690606fc66f45642e447a1421605af22ff6c2426f16ed3cfaa68ce7f98a", kill_on_drop: false }`
[INFO] [stdout] a6a94690606fc66f45642e447a1421605af22ff6c2426f16ed3cfaa68ce7f98a