[INFO] fetching crate cargo-minimal-versions 0.1.21...
[INFO] checking cargo-minimal-versions-0.1.21 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate cargo-minimal-versions 0.1.21 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate cargo-minimal-versions 0.1.21 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 cargo-minimal-versions 0.1.21
[INFO] finished tweaking crates.io crate cargo-minimal-versions 0.1.21
[INFO] tweaked toml for crates.io crate cargo-minimal-versions 0.1.21 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate cargo-minimal-versions 0.1.21 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcolor v1.3.0
[INFO] [stderr]   Downloaded lexopt v0.3.0
[INFO] [stderr]   Downloaded ctrlc v3.4.1
[INFO] [stderr]   Downloaded semver v1.0.20
[INFO] [stderr]   Downloaded toml_edit v0.20.5
[INFO] [stderr]   Downloaded winnow v0.5.17
[INFO] [stderr]   Downloaded nix v0.27.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 35844017cac25016d9e73725f95e28e68c94e0d06285fdc19d2c0845f1e1f9e0
[INFO] running `Command { std: "docker" "start" "-a" "35844017cac25016d9e73725f95e28e68c94e0d06285fdc19d2c0845f1e1f9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35844017cac25016d9e73725f95e28e68c94e0d06285fdc19d2c0845f1e1f9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35844017cac25016d9e73725f95e28e68c94e0d06285fdc19d2c0845f1e1f9e0", kill_on_drop: false }`
[INFO] [stdout] 35844017cac25016d9e73725f95e28e68c94e0d06285fdc19d2c0845f1e1f9e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1e4f17b47eb2ac6921bb27043e1c743aee0975fd57138795db865764de290e40
[INFO] running `Command { std: "docker" "start" "-a" "1e4f17b47eb2ac6921bb27043e1c743aee0975fd57138795db865764de290e40", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking linux-raw-sys v0.4.10
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]     Checking hashbrown v0.14.2
[INFO] [stderr]     Checking winnow v0.5.17
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking lexopt v0.3.0
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking indexmap v2.0.2
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking toml_edit v0.20.5
[INFO] [stderr]     Checking ctrlc v3.4.1
[INFO] [stderr]     Checking cargo-minimal-versions v0.1.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `into_object` is never used
[INFO] [stdout]    --> src/metadata.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn into_object(value: Value) -> Option<Object> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_object` is never used
[INFO] [stdout]    --> src/metadata.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | trait ObjectExt {
[INFO] [stdout]     |       --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn remove_object(&mut self, key: &'static str) -> ParseResult<Object>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `into_object` is never used
[INFO] [stdout]    --> src/metadata.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn into_object(value: Value) -> Option<Object> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_object` is never used
[INFO] [stdout]    --> src/metadata.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | trait ObjectExt {
[INFO] [stdout]     |       --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn remove_object(&mut self, key: &'static str) -> ParseResult<Object>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.10s
[INFO] running `Command { std: "docker" "inspect" "1e4f17b47eb2ac6921bb27043e1c743aee0975fd57138795db865764de290e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4f17b47eb2ac6921bb27043e1c743aee0975fd57138795db865764de290e40", kill_on_drop: false }`
[INFO] [stdout] 1e4f17b47eb2ac6921bb27043e1c743aee0975fd57138795db865764de290e40