[INFO] fetching crate maize 0.1.1...
[INFO] checking maize-0.1.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate maize 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate maize 0.1.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maize 0.1.1
[INFO] finished tweaking crates.io crate maize 0.1.1
[INFO] tweaked toml for crates.io crate maize 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate maize 0.1.1 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2bb4b246f3cc8b48680f1a26d2c0496d44cb0d0f05907c70320de31e408c014
[INFO] running `Command { std: "docker" "start" "-a" "c2bb4b246f3cc8b48680f1a26d2c0496d44cb0d0f05907c70320de31e408c014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2bb4b246f3cc8b48680f1a26d2c0496d44cb0d0f05907c70320de31e408c014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2bb4b246f3cc8b48680f1a26d2c0496d44cb0d0f05907c70320de31e408c014", kill_on_drop: false }`
[INFO] [stdout] c2bb4b246f3cc8b48680f1a26d2c0496d44cb0d0f05907c70320de31e408c014
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b87dc84d69fa105caa01961ab556860cb7ae7f711aa666bd13e0a845a3a7e6
[INFO] running `Command { std: "docker" "start" "-a" "b1b87dc84d69fa105caa01961ab556860cb7ae7f711aa666bd13e0a845a3a7e6", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking daggy v0.8.0
[INFO] [stderr]     Checking maize v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `backtrace::Backtrace`
[INFO] [stdout]  --> src/parse.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{backtrace::Backtrace, collections::{HashMap, HashSet}};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `infer::infer`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{infer::infer, parse::{parse, Context, Reader}};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `backtrace::Backtrace`
[INFO] [stdout]  --> src/parse.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{backtrace::Backtrace, collections::{HashMap, HashSet}};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `infer::infer`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{infer::infer, parse::{parse, Context, Reader}};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `la` is never used
[INFO] [stdout]    --> src/parse.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl Context {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 341 |     pub fn la(&mut self, op: &str) {
[INFO] [stdout]     |            ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_applications` is never used
[INFO] [stdout]   --> src/infer.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn count_applications(expr: &Expr) -> (&Expr, u64) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_once` is never used
[INFO] [stdout]   --> src/infer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn infer_once(types: &HashMap<&Expr, usize>) -> Vec<(usize, usize)> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_many` is never used
[INFO] [stdout]    --> src/infer.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub fn infer_many(types: &mut HashMap<&Expr, usize>) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer` is never used
[INFO] [stdout]    --> src/infer.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub fn infer(expr: &Expr) -> HashMap<&Expr, usize> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect` is never used
[INFO] [stdout]    --> src/infer.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub fn collect<'a>(expr: &'a Expr) -> Vec<&'a Expr> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_into` is never used
[INFO] [stdout]    --> src/infer.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn collect_into<'a>(expr: &'a Expr, vec: &mut Vec<&'a Expr>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `name` is never used
[INFO] [stdout]  --> src/test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn name(name: &str) -> Expr {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `app` is never used
[INFO] [stdout]  --> src/test.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn app(app: Expr, var: Expr) -> Expr {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infix` is never used
[INFO] [stdout]   --> src/test.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn infix(infix: String, left: Expr, right: Expr) -> Expr {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `raw_infix` is never used
[INFO] [stdout]   --> src/test.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn raw_infix(infix_expr: &str, left: &str, right: &str) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fold` is never used
[INFO] [stdout]   --> src/test.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn fold<const N: usize>(app_expr: Expr, vars: [Expr; N]) -> Expr {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_parse` is never used
[INFO] [stdout]    --> src/test.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn assert_parse(first: &str, second: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_parse_rem` is never used
[INFO] [stdout]    --> src/test.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn assert_parse_rem(first: &str, first_len: usize, second: &str, second_len: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `la` is never used
[INFO] [stdout]    --> src/parse.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl Context {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 341 |     pub fn la(&mut self, op: &str) {
[INFO] [stdout]     |            ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_applications` is never used
[INFO] [stdout]   --> src/infer.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn count_applications(expr: &Expr) -> (&Expr, u64) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_once` is never used
[INFO] [stdout]   --> src/infer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn infer_once(types: &HashMap<&Expr, usize>) -> Vec<(usize, usize)> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_many` is never used
[INFO] [stdout]    --> src/infer.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub fn infer_many(types: &mut HashMap<&Expr, usize>) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer` is never used
[INFO] [stdout]    --> src/infer.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub fn infer(expr: &Expr) -> HashMap<&Expr, usize> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect` is never used
[INFO] [stdout]    --> src/infer.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub fn collect<'a>(expr: &'a Expr) -> Vec<&'a Expr> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_into` is never used
[INFO] [stdout]    --> src/infer.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn collect_into<'a>(expr: &'a Expr, vec: &mut Vec<&'a Expr>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.10s
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b1b87dc84d69fa105caa01961ab556860cb7ae7f711aa666bd13e0a845a3a7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b87dc84d69fa105caa01961ab556860cb7ae7f711aa666bd13e0a845a3a7e6", kill_on_drop: false }`
[INFO] [stdout] b1b87dc84d69fa105caa01961ab556860cb7ae7f711aa666bd13e0a845a3a7e6