[INFO] fetching crate symcode-webapp 0.1.0...
[INFO] checking symcode-webapp-0.1.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate symcode-webapp 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate symcode-webapp 0.1.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate symcode-webapp 0.1.0
[INFO] finished tweaking crates.io crate symcode-webapp 0.1.0
[INFO] tweaked toml for crates.io crate symcode-webapp 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 5f14717ec716460b30bceee90f5c94573c2a917a3f33f8f6203f743e6f522d17
[INFO] running `Command { std: "docker" "start" "-a" "5f14717ec716460b30bceee90f5c94573c2a917a3f33f8f6203f743e6f522d17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f14717ec716460b30bceee90f5c94573c2a917a3f33f8f6203f743e6f522d17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f14717ec716460b30bceee90f5c94573c2a917a3f33f8f6203f743e6f522d17", kill_on_drop: false }`
[INFO] [stdout] 5f14717ec716460b30bceee90f5c94573c2a917a3f33f8f6203f743e6f522d17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 8ca455b76c6cd2d73d1f6a14b4e8bd3a03dbbf1f77f92af10ce02ac1320e91d4
[INFO] running `Command { std: "docker" "start" "-a" "8ca455b76c6cd2d73d1f6a14b4e8bd3a03dbbf1f77f92af10ce02ac1320e91d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.73
[INFO] [stderr]    Compiling bumpalo v3.6.1
[INFO] [stderr]     Checking crczoo v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.73
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking flo_curves v0.3.1
[INFO] [stderr]     Checking visioncortex v0.5.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.73
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking permutator v0.4.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.73
[INFO] [stderr]     Checking symcode v0.1.0
[INFO] [stderr]     Checking wasm-bindgen v0.2.73
[INFO] [stderr]     Checking js-sys v0.3.50
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking web-sys v0.3.50
[INFO] [stderr]     Checking console_log v0.2.0
[INFO] [stderr]     Checking symcode-webapp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/app.rs:56:28
[INFO] [stdout]    |
[INFO] [stdout] 56 |             None => panic!("Canvas with id ".to_owned() + canvas_id + " is not found!"),
[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] 56 |             None => panic!("{}", "Canvas with id ".to_owned() + canvas_id + " is not found!"),
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 56 |             None => std::panic::panic_any("Canvas with id ".to_owned() + canvas_id + " is not found!"),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/app.rs:56:28
[INFO] [stdout]    |
[INFO] [stdout] 56 |             None => panic!("Canvas with id ".to_owned() + canvas_id + " is not found!"),
[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] 56 |             None => panic!("{}", "Canvas with id ".to_owned() + canvas_id + " is not found!"),
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 56 |             None => std::panic::panic_any("Canvas with id ".to_owned() + canvas_id + " is not found!"),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.32s
[INFO] running `Command { std: "docker" "inspect" "8ca455b76c6cd2d73d1f6a14b4e8bd3a03dbbf1f77f92af10ce02ac1320e91d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ca455b76c6cd2d73d1f6a14b4e8bd3a03dbbf1f77f92af10ce02ac1320e91d4", kill_on_drop: false }`
[INFO] [stdout] 8ca455b76c6cd2d73d1f6a14b4e8bd3a03dbbf1f77f92af10ce02ac1320e91d4