[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] testing juggernaut0/snek against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juggernaut0/snek on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9a5f249dbb4ac87c1fea647df3232239824517280e46f3d0b510fe1b61688d0
[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" "f9a5f249dbb4ac87c1fea647df3232239824517280e46f3d0b510fe1b61688d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9a5f249dbb4ac87c1fea647df3232239824517280e46f3d0b510fe1b61688d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9a5f249dbb4ac87c1fea647df3232239824517280e46f3d0b510fe1b61688d0", kill_on_drop: false }`
[INFO] [stdout] f9a5f249dbb4ac87c1fea647df3232239824517280e46f3d0b510fe1b61688d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f422b26191c34dbe869f9f48f557bd7d394bf2d6705e9e82a9c299b32346d1ad
[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" "f422b26191c34dbe869f9f48f557bd7d394bf2d6705e9e82a9c299b32346d1ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "f422b26191c34dbe869f9f48f557bd7d394bf2d6705e9e82a9c299b32346d1ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f422b26191c34dbe869f9f48f557bd7d394bf2d6705e9e82a9c299b32346d1ad", kill_on_drop: false }`
[INFO] [stdout] f422b26191c34dbe869f9f48f557bd7d394bf2d6705e9e82a9c299b32346d1ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 204a329ead1538951cd38d3c60fd933310937397a7cc7b34f0b68a1f0e0b5ebc
[INFO] running `Command { std: "docker" "start" "-a" "204a329ead1538951cd38d3c60fd933310937397a7cc7b34f0b68a1f0e0b5ebc", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "204a329ead1538951cd38d3c60fd933310937397a7cc7b34f0b68a1f0e0b5ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "204a329ead1538951cd38d3c60fd933310937397a7cc7b34f0b68a1f0e0b5ebc", kill_on_drop: false }`
[INFO] [stdout] 204a329ead1538951cd38d3c60fd933310937397a7cc7b34f0b68a1f0e0b5ebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6c3f019d8c38e5962642c60a2c43b74bc678518d686d31290fd7c1f0bfb16e8b
[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" "6c3f019d8c38e5962642c60a2c43b74bc678518d686d31290fd7c1f0bfb16e8b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `IDENT`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/scanner.rs:171:5
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 171 |     IDENT,
[INFO] [stdout] 
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `STRING`
[INFO] [stderr]    --> src/scanner.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     STRING,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `KEYWORD`
[INFO] [stderr]    --> src/scanner.rs:174:5
[INFO] [stderr]     |
[INFO] [stderr] 174 |     KEYWORD,
[INFO] [stderr]     |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SYMBOL`
[INFO] [stderr]    --> src/scanner.rs:175:5
[INFO] [stderr]     |
[INFO] [stderr] 175 |     SYMBOL,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/snek-f2a33f12693dc5c0
[INFO] running `Command { std: "docker" "inspect" "6c3f019d8c38e5962642c60a2c43b74bc678518d686d31290fd7c1f0bfb16e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c3f019d8c38e5962642c60a2c43b74bc678518d686d31290fd7c1f0bfb16e8b", kill_on_drop: false }`
[INFO] [stdout] 6c3f019d8c38e5962642c60a2c43b74bc678518d686d31290fd7c1f0bfb16e8b