[INFO] cloning repository https://github.com/fiveseven-lambda/stack-machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fiveseven-lambda/stack-machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiveseven-lambda%2Fstack-machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiveseven-lambda%2Fstack-machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c2212fbae057edd1c5afc4bfc1447ac6865c5e5
[INFO] checking fiveseven-lambda/stack-machine against try#f17e3a389e192f83fe27a581774a9d1dbb8e565b for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiveseven-lambda%2Fstack-machine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fiveseven-lambda/stack-machine on toolchain f17e3a389e192f83fe27a581774a9d1dbb8e565b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fiveseven-lambda/stack-machine
[INFO] finished tweaking git repo https://github.com/fiveseven-lambda/stack-machine
[INFO] tweaked toml for git repo https://github.com/fiveseven-lambda/stack-machine written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/fiveseven-lambda/stack-machine 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" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf25d8717423b2ff62dc5c122a0b9c914a721029e8541694b617399ed9c31645
[INFO] running `Command { std: "docker" "start" "-a" "bf25d8717423b2ff62dc5c122a0b9c914a721029e8541694b617399ed9c31645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf25d8717423b2ff62dc5c122a0b9c914a721029e8541694b617399ed9c31645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf25d8717423b2ff62dc5c122a0b9c914a721029e8541694b617399ed9c31645", kill_on_drop: false }`
[INFO] [stdout] bf25d8717423b2ff62dc5c122a0b9c914a721029e8541694b617399ed9c31645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04e3334a5a5a598aa12db64cb3e5c95a554d828c6ef7a870f4a7031ea325ea12
[INFO] running `Command { std: "docker" "start" "-a" "04e3334a5a5a598aa12db64cb3e5c95a554d828c6ef7a870f4a7031ea325ea12", kill_on_drop: false }`
[INFO] [stderr]     Checking stack-machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Add` and `Jump` are never constructed
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | enum Instruction {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] 54 |     Push(i64),
[INFO] [stdout] 55 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 56 |     Sub,
[INFO] [stdout] 57 |     Jump(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add` and `Jump` are never constructed
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | enum Instruction {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] 54 |     Push(i64),
[INFO] [stdout] 55 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 56 |     Sub,
[INFO] [stdout] 57 |     Jump(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "04e3334a5a5a598aa12db64cb3e5c95a554d828c6ef7a870f4a7031ea325ea12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e3334a5a5a598aa12db64cb3e5c95a554d828c6ef7a870f4a7031ea325ea12", kill_on_drop: false }`
[INFO] [stdout] 04e3334a5a5a598aa12db64cb3e5c95a554d828c6ef7a870f4a7031ea325ea12