[INFO] cloning repository https://github.com/SultanAlhosani/c4_rust_masafi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SultanAlhosani/c4_rust_masafi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSultanAlhosani%2Fc4_rust_masafi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSultanAlhosani%2Fc4_rust_masafi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fa1c86de1e8421ee875d2b0b47062a94f215db1
[INFO] checking SultanAlhosani/c4_rust_masafi against try#0cb362313295507a2f4321c0e30cea0168f2fe71 for pr-138961-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSultanAlhosani%2Fc4_rust_masafi" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SultanAlhosani/c4_rust_masafi
[INFO] finished tweaking git repo https://github.com/SultanAlhosani/c4_rust_masafi
[INFO] tweaked toml for git repo https://github.com/SultanAlhosani/c4_rust_masafi written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SultanAlhosani/c4_rust_masafi on toolchain 0cb362313295507a2f4321c0e30cea0168f2fe71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SultanAlhosani/c4_rust_masafi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "fetch" "--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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fadbd80246a798a90c223392baffefb595b1f2721cd0d25d1c51f56a028e5cc
[INFO] running `Command { std: "docker" "start" "-a" "5fadbd80246a798a90c223392baffefb595b1f2721cd0d25d1c51f56a028e5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fadbd80246a798a90c223392baffefb595b1f2721cd0d25d1c51f56a028e5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fadbd80246a798a90c223392baffefb595b1f2721cd0d25d1c51f56a028e5cc", kill_on_drop: false }`
[INFO] [stdout] 5fadbd80246a798a90c223392baffefb595b1f2721cd0d25d1c51f56a028e5cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41c85c4e403afefaef5cfd78b1bd6d87ef2e4c6199f676a8417bea523fcd09c4
[INFO] running `Command { std: "docker" "start" "-a" "41c85c4e403afefaef5cfd78b1bd6d87ef2e4c6199f676a8417bea523fcd09c4", kill_on_drop: false }`
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking c4_rust_masafi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `AddressOf` and `Deref` are never constructed
[INFO] [stdout]   --> src/lexer.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 44 |     AddressOf, // '&' address-of operator
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 45 |     Deref, // '*' dereference operator
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/parser.rs:193:50
[INFO] [stdout]     |
[INFO] [stdout] 193 |                         panic!("Expected ',' or '}}' in enum declaration");
[INFO] [stdout]     |                                                  ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 193 |                         panic!("{}", "Expected ',' or '}}' in enum declaration");
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `AddressOf` and `Deref` are never constructed
[INFO] [stdout]   --> src/lexer.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 44 |     AddressOf, // '&' address-of operator
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 45 |     Deref, // '*' dereference operator
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/parser.rs:193:50
[INFO] [stdout]     |
[INFO] [stdout] 193 |                         panic!("Expected ',' or '}}' in enum declaration");
[INFO] [stdout]     |                                                  ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 193 |                         panic!("{}", "Expected ',' or '}}' in enum declaration");
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "41c85c4e403afefaef5cfd78b1bd6d87ef2e4c6199f676a8417bea523fcd09c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41c85c4e403afefaef5cfd78b1bd6d87ef2e4c6199f676a8417bea523fcd09c4", kill_on_drop: false }`
[INFO] [stdout] 41c85c4e403afefaef5cfd78b1bd6d87ef2e4c6199f676a8417bea523fcd09c4