[INFO] cloning repository https://github.com/shinobu52/parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shinobu52/parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshinobu52%2Fparser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshinobu52%2Fparser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1192e1c3fad0cad63861dd0846d824f05d78529b
[INFO] building shinobu52/parser 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%2Fshinobu52%2Fparser" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shinobu52/parser 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/shinobu52/parser
[INFO] finished tweaking git repo https://github.com/shinobu52/parser
[INFO] tweaked toml for git repo https://github.com/shinobu52/parser written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shinobu52/parser 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] [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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 47232ec9dbef5770c4105e0db29890388e3b222f587269c7f93e11bda8b99e09
[INFO] running `Command { std: "docker" "start" "-a" "47232ec9dbef5770c4105e0db29890388e3b222f587269c7f93e11bda8b99e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47232ec9dbef5770c4105e0db29890388e3b222f587269c7f93e11bda8b99e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47232ec9dbef5770c4105e0db29890388e3b222f587269c7f93e11bda8b99e09", kill_on_drop: false }`
[INFO] [stdout] 47232ec9dbef5770c4105e0db29890388e3b222f587269c7f93e11bda8b99e09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 38677b38d7f6f1b25fd54ec09ea73a52092aeaa7622d19b0edb416ba024b62b9
[INFO] running `Command { std: "docker" "start" "-a" "38677b38d7f6f1b25fd54ec09ea73a52092aeaa7622d19b0edb416ba024b62b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RpnCompiler` is never constructed
[INFO] [stdout]  --> src/reverse_polish.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RpnCompiler;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `compile`, `compile_inner`, `compile_uniop`, and `compile_binop` are never used
[INFO] [stdout]   --> src/reverse_polish.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl RpnCompiler {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 7  |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn compile(&mut self, expr: &Ast) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn compile_inner(&mut self, expr: &Ast, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn compile_uniop(&mut self, op: &UniOp, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn compile_binop(&mut self, op: &BinOp, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "38677b38d7f6f1b25fd54ec09ea73a52092aeaa7622d19b0edb416ba024b62b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38677b38d7f6f1b25fd54ec09ea73a52092aeaa7622d19b0edb416ba024b62b9", kill_on_drop: false }`
[INFO] [stdout] 38677b38d7f6f1b25fd54ec09ea73a52092aeaa7622d19b0edb416ba024b62b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cfd0f7628df3d64f9d89752b9d4a551146957ff899b9a91c621d1ca8e4bfec4d
[INFO] running `Command { std: "docker" "start" "-a" "cfd0f7628df3d64f9d89752b9d4a551146957ff899b9a91c621d1ca8e4bfec4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RpnCompiler` is never constructed
[INFO] [stdout]  --> src/reverse_polish.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RpnCompiler;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `compile`, `compile_inner`, `compile_uniop`, and `compile_binop` are never used
[INFO] [stdout]   --> src/reverse_polish.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl RpnCompiler {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 7  |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn compile(&mut self, expr: &Ast) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn compile_inner(&mut self, expr: &Ast, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn compile_uniop(&mut self, op: &UniOp, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn compile_binop(&mut self, op: &BinOp, buf: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "cfd0f7628df3d64f9d89752b9d4a551146957ff899b9a91c621d1ca8e4bfec4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfd0f7628df3d64f9d89752b9d4a551146957ff899b9a91c621d1ca8e4bfec4d", kill_on_drop: false }`
[INFO] [stdout] cfd0f7628df3d64f9d89752b9d4a551146957ff899b9a91c621d1ca8e4bfec4d