[INFO] fetching crate srash 0.0.0...
[INFO] checking srash-0.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate srash 0.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate srash 0.0.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate srash 0.0.0
[INFO] finished tweaking crates.io crate srash 0.0.0
[INFO] tweaked toml for crates.io crate srash 0.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate srash 0.0.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console v0.15.5
[INFO] [stderr]   Downloaded libc v0.2.140
[INFO] [stderr]   Downloaded insta v1.28.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d2901cfe1c59c02295fa84538745e97d709270f4b3b6341f202655c452f14ec
[INFO] running `Command { std: "docker" "start" "-a" "0d2901cfe1c59c02295fa84538745e97d709270f4b3b6341f202655c452f14ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d2901cfe1c59c02295fa84538745e97d709270f4b3b6341f202655c452f14ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2901cfe1c59c02295fa84538745e97d709270f4b3b6341f202655c452f14ec", kill_on_drop: false }`
[INFO] [stdout] 0d2901cfe1c59c02295fa84538745e97d709270f4b3b6341f202655c452f14ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dfe4e0b99d1e5d2b2872f41d0fc14df10abdd8fdd9c514f53dd2d38c75ea761
[INFO] running `Command { std: "docker" "start" "-a" "0dfe4e0b99d1e5d2b2872f41d0fc14df10abdd8fdd9c514f53dd2d38c75ea761", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking similar v2.2.1
[INFO] [stderr]     Checking srash v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ast::parser::ir::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ast::parser::ir::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]  --> src/ast/errors.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 |     UnclosedQuote { row: usize, col: usize },
[INFO] [stdout]   |     -------------   ^^^         ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]  --> src/ast/errors.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 |     UnclosedBlock { row: usize, col: usize },
[INFO] [stdout]   |     -------------   ^^^         ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidVar` is never constructed
[INFO] [stdout]  --> src/ast/errors.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum LexingError {
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] 3 |     InvalidVar { row: usize, col: usize },
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LexingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_symbols` is never used
[INFO] [stdout]   --> src/ast/tokens.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_symbols(symbols: &Symbols) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `symbols_to_string` is never used
[INFO] [stdout]   --> src/ast/tokens.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn symbols_to_string(symbols: &Symbols) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking console v0.15.5
[INFO] [stderr]     Checking insta v1.28.0
[INFO] [stdout] warning: the item `insta` is imported redundantly
[INFO] [stdout]    --> src/ast/lexer.rs:339:17
[INFO] [stdout]     |
[INFO] [stdout] 339 |     use insta::{self, *};
[INFO] [stdout]     |                 ^^^^ the item `insta` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `insta` is imported redundantly
[INFO] [stdout]   --> src/ast/parser/mod.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use insta::{self, *};
[INFO] [stdout]    |                 ^^^^ the item `insta` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::parser::ir::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ast::parser::ir::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]  --> src/ast/errors.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 |     UnclosedQuote { row: usize, col: usize },
[INFO] [stdout]   |     -------------   ^^^         ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]  --> src/ast/errors.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 |     UnclosedBlock { row: usize, col: usize },
[INFO] [stdout]   |     -------------   ^^^         ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidVar` is never constructed
[INFO] [stdout]  --> src/ast/errors.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum LexingError {
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] 3 |     InvalidVar { row: usize, col: usize },
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LexingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_symbols` is never used
[INFO] [stdout]   --> src/ast/tokens.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_symbols(symbols: &Symbols) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "0dfe4e0b99d1e5d2b2872f41d0fc14df10abdd8fdd9c514f53dd2d38c75ea761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dfe4e0b99d1e5d2b2872f41d0fc14df10abdd8fdd9c514f53dd2d38c75ea761", kill_on_drop: false }`
[INFO] [stdout] 0dfe4e0b99d1e5d2b2872f41d0fc14df10abdd8fdd9c514f53dd2d38c75ea761