[INFO] cloning repository https://github.com/juggernaut0/snek
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juggernaut0/snek" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49c64b3de6c848a7253d4c04dc9a5d46b5280139
[INFO] checking juggernaut0/snek against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juggernaut0/snek on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/juggernaut0/snek
[INFO] finished tweaking git repo https://github.com/juggernaut0/snek
[INFO] tweaked toml for git repo https://github.com/juggernaut0/snek written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/juggernaut0/snek already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24e00e6f180df161b8aa9ee9f783bc14d677101cec422ebbb220c03d7d40ea79
[INFO] running `Command { std: "docker" "start" "-a" "24e00e6f180df161b8aa9ee9f783bc14d677101cec422ebbb220c03d7d40ea79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24e00e6f180df161b8aa9ee9f783bc14d677101cec422ebbb220c03d7d40ea79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e00e6f180df161b8aa9ee9f783bc14d677101cec422ebbb220c03d7d40ea79", kill_on_drop: false }`
[INFO] [stdout] 24e00e6f180df161b8aa9ee9f783bc14d677101cec422ebbb220c03d7d40ea79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2b7f322ee26ce221c7649dde972cdb254ac2911bc005f6bd41cef6ea72b4523
[INFO] running `Command { std: "docker" "start" "-a" "d2b7f322ee26ce221c7649dde972cdb254ac2911bc005f6bd41cef6ea72b4523", kill_on_drop: false }`
[INFO] [stderr]     Checking snek v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `IDENT`
[INFO] [stdout]    --> src/scanner.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 |     IDENT,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `STRING`
[INFO] [stdout]    --> src/scanner.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 173 |     STRING,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KEYWORD`
[INFO] [stdout]    --> src/scanner.rs:174:5
[INFO] [stdout]     |
[INFO] [stdout] 174 |     KEYWORD,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SYMBOL`
[INFO] [stdout]    --> src/scanner.rs:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 |     SYMBOL,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IDENT`
[INFO] [stdout]    --> src/scanner.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 |     IDENT,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `STRING`
[INFO] [stdout]    --> src/scanner.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 173 |     STRING,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KEYWORD`
[INFO] [stdout]    --> src/scanner.rs:174:5
[INFO] [stdout]     |
[INFO] [stdout] 174 |     KEYWORD,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SYMBOL`
[INFO] [stdout]    --> src/scanner.rs:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 |     SYMBOL,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "d2b7f322ee26ce221c7649dde972cdb254ac2911bc005f6bd41cef6ea72b4523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2b7f322ee26ce221c7649dde972cdb254ac2911bc005f6bd41cef6ea72b4523", kill_on_drop: false }`
[INFO] [stdout] d2b7f322ee26ce221c7649dde972cdb254ac2911bc005f6bd41cef6ea72b4523