[INFO] cloning repository https://github.com/orhnk/merge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/orhnk/merge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forhnk%2Fmerge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forhnk%2Fmerge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b00b855d4ca74c68cfd56aaf3b5c089433c3315
[INFO] checking orhnk/merge against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forhnk%2Fmerge" "/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/orhnk/merge 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 git repo https://github.com/orhnk/merge
[INFO] finished tweaking git repo https://github.com/orhnk/merge
[INFO] tweaked toml for git repo https://github.com/orhnk/merge written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/orhnk/merge 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded synstructure v0.13.0
[INFO] [stderr]   Downloaded clap v4.4.13
[INFO] [stderr]   Downloaded fsio v0.4.0
[INFO] [stderr]   Downloaded run_script v0.10.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e0ebbc11ffb24b8036dcf8b37c02677fbcb00a4b81989a8cc2be8b8d5de9d47
[INFO] running `Command { std: "docker" "start" "-a" "2e0ebbc11ffb24b8036dcf8b37c02677fbcb00a4b81989a8cc2be8b8d5de9d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e0ebbc11ffb24b8036dcf8b37c02677fbcb00a4b81989a8cc2be8b8d5de9d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0ebbc11ffb24b8036dcf8b37c02677fbcb00a4b81989a8cc2be8b8d5de9d47", kill_on_drop: false }`
[INFO] [stdout] 2e0ebbc11ffb24b8036dcf8b37c02677fbcb00a4b81989a8cc2be8b8d5de9d47
[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" "-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] 49de2cdb03a2d69b92e65e8bef6f69c641f0986ccfd4e4787747925e6a19c95c
[INFO] running `Command { std: "docker" "start" "-a" "49de2cdb03a2d69b92e65e8bef6f69c641f0986ccfd4e4787747925e6a19c95c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.74
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling serde_json v1.0.110
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking unicode-segmentation v0.1.2
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]     Checking anstream v0.6.5
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling strcursor v0.2.5
[INFO] [stderr]     Checking clap_builder v4.4.12
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v2.0.46
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fsio v0.4.0
[INFO] [stderr]     Checking run_script v0.10.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking synstructure v0.13.0
[INFO] [stderr]     Checking proc v0.1.0 (/opt/rustwide/workdir/proc)
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]     Checking clap v4.4.13
[INFO] [stderr]     Checking merge v0.1.0 (/opt/rustwide/workdir/merge)
[INFO] [stdout] warning: unused imports: `package_manager_function`, `package_manager_json`
[INFO] [stdout]  --> merge/src/json.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::macros::{package_manager_function, package_manager_json};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `package_manager_function`, `package_manager_json`
[INFO] [stdout]  --> merge/src/json.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::macros::{package_manager_function, package_manager_json};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> merge/src/json.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::{Context, Result};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> merge/src/json.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::{Context, Result};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `generate_single_package_manager_function`, `generate_single_package_manager_json_struct`
[INFO] [stdout]  --> merge/src/json.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use proc::{generate_single_package_manager_function, generate_single_package_manager_json_struct};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `generate_single_package_manager_function`, `generate_single_package_manager_json_struct`
[INFO] [stdout]  --> merge/src/json.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use proc::{generate_single_package_manager_function, generate_single_package_manager_json_struct};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> merge/src/json.rs:55:24
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn into_mir(&self, cmd: String) -> Result<String> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> merge/src/json.rs:55:24
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn into_mir(&self, cmd: String) -> Result<String> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_mir` is never used
[INFO] [stdout]   --> merge/src/json.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub trait IntoMgMir {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 47 |     fn into_mir(&self, cmd: String) -> Result<String>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IntoMgPm` is never used
[INFO] [stdout]   --> merge/src/json.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub trait IntoMgPm {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MgSingleEmulator` is never constructed
[INFO] [stdout]   --> merge/src/json.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct MgSingleEmulator {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> merge/src/json.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | impl MgSingleEmulator {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 89 |     fn new(mir: String, pm: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PACMAN` is never used
[INFO] [stdout]   --> merge/src/json.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub const PACMAN: &str = "db/pacman.json";
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PACKAGE_MANAGER` is never used
[INFO] [stdout]   --> merge/src/json.rs:30:15
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub const PACKAGE_MANAGER: &str = "<pm>";
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NULL` is never used
[INFO] [stdout]   --> merge/src/json.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub const NULL: &str = "";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_mir` is never used
[INFO] [stdout]   --> merge/src/json.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub trait IntoMgMir {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 47 |     fn into_mir(&self, cmd: String) -> Result<String>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IntoMgPm` is never used
[INFO] [stdout]   --> merge/src/json.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub trait IntoMgPm {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MgSingleEmulator` is never constructed
[INFO] [stdout]   --> merge/src/json.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct MgSingleEmulator {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> merge/src/json.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | impl MgSingleEmulator {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 89 |     fn new(mir: String, pm: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PACMAN` is never used
[INFO] [stdout]   --> merge/src/json.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub const PACMAN: &str = "db/pacman.json";
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PACKAGE_MANAGER` is never used
[INFO] [stdout]   --> merge/src/json.rs:30:15
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub const PACKAGE_MANAGER: &str = "<pm>";
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NULL` is never used
[INFO] [stdout]   --> merge/src/json.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub const NULL: &str = "";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.85s
[INFO] running `Command { std: "docker" "inspect" "49de2cdb03a2d69b92e65e8bef6f69c641f0986ccfd4e4787747925e6a19c95c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49de2cdb03a2d69b92e65e8bef6f69c641f0986ccfd4e4787747925e6a19c95c", kill_on_drop: false }`
[INFO] [stdout] 49de2cdb03a2d69b92e65e8bef6f69c641f0986ccfd4e4787747925e6a19c95c