[INFO] cloning repository https://github.com/sutt0n/monkey-interpreter-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sutt0n/monkey-interpreter-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsutt0n%2Fmonkey-interpreter-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsutt0n%2Fmonkey-interpreter-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 048ac785ae678ef9849f57a9cb55e788c69c184d
[INFO] building sutt0n/monkey-interpreter-rs against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsutt0n%2Fmonkey-interpreter-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sutt0n/monkey-interpreter-rs on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sutt0n/monkey-interpreter-rs
[INFO] finished tweaking git repo https://github.com/sutt0n/monkey-interpreter-rs
[INFO] tweaked toml for git repo https://github.com/sutt0n/monkey-interpreter-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sutt0n/monkey-interpreter-rs 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ef28f4d0c978ed04b58755df4ce4c67e0b6d7c747e59aad9f853601873e5018
[INFO] running `Command { std: "docker" "start" "-a" "0ef28f4d0c978ed04b58755df4ce4c67e0b6d7c747e59aad9f853601873e5018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ef28f4d0c978ed04b58755df4ce4c67e0b6d7c747e59aad9f853601873e5018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ef28f4d0c978ed04b58755df4ce4c67e0b6d7c747e59aad9f853601873e5018", kill_on_drop: false }`
[INFO] [stdout] 0ef28f4d0c978ed04b58755df4ce4c67e0b6d7c747e59aad9f853601873e5018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3aa4254e44338ea92dfeb58a4e02d1fec63e85e0416a4a843c1afab122e35b7
[INFO] running `Command { std: "docker" "start" "-a" "e3aa4254e44338ea92dfeb58a4e02d1fec63e85e0416a4a843c1afab122e35b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey-interp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `identifier` is never read
[INFO] [stdout]    --> lib/parser/parser.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut identifier = "".to_string();
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "e3aa4254e44338ea92dfeb58a4e02d1fec63e85e0416a4a843c1afab122e35b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3aa4254e44338ea92dfeb58a4e02d1fec63e85e0416a4a843c1afab122e35b7", kill_on_drop: false }`
[INFO] [stdout] e3aa4254e44338ea92dfeb58a4e02d1fec63e85e0416a4a843c1afab122e35b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58f68fdf0f0abda879bcb76ae9cb6b26a1f5174e64d5b3240b611936909d94b7
[INFO] running `Command { std: "docker" "start" "-a" "58f68fdf0f0abda879bcb76ae9cb6b26a1f5174e64d5b3240b611936909d94b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey-interp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `identifier` is never read
[INFO] [stdout]    --> lib/parser/parser.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut identifier = "".to_string();
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `identifier` is never read
[INFO] [stdout]    --> lib/parser/parser.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut identifier = "".to_string();
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "58f68fdf0f0abda879bcb76ae9cb6b26a1f5174e64d5b3240b611936909d94b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58f68fdf0f0abda879bcb76ae9cb6b26a1f5174e64d5b3240b611936909d94b7", kill_on_drop: false }`
[INFO] [stdout] 58f68fdf0f0abda879bcb76ae9cb6b26a1f5174e64d5b3240b611936909d94b7