[INFO] fetching crate abscissa_core 0.7.0...
[INFO] checking abscissa_core-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate abscissa_core 0.7.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate abscissa_core 0.7.0 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 abscissa_core 0.7.0
[INFO] finished tweaking crates.io crate abscissa_core 0.7.0
[INFO] tweaked toml for crates.io crate abscissa_core 0.7.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 86 packages
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding owo-colors v3.5.0 (latest: v4.0.0)
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[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding toml v0.5.11 (latest: v0.8.12)
[INFO] [stderr]       Adding tracing-log v0.1.4 (latest: v0.2.0)
[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 matchers v0.1.0
[INFO] [stderr]   Downloaded nu-ansi-term v0.46.0
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[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] 8b8066aeeceb6289678c59b1289eebb1b73d29ef2e69510a0f81e0866c2e7372
[INFO] running `Command { std: "docker" "start" "-a" "8b8066aeeceb6289678c59b1289eebb1b73d29ef2e69510a0f81e0866c2e7372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b8066aeeceb6289678c59b1289eebb1b73d29ef2e69510a0f81e0866c2e7372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b8066aeeceb6289678c59b1289eebb1b73d29ef2e69510a0f81e0866c2e7372", kill_on_drop: false }`
[INFO] [stdout] 8b8066aeeceb6289678c59b1289eebb1b73d29ef2e69510a0f81e0866c2e7372
[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] 6d5ba68de1ba91a2a65ad668c02b2e30ff3ba3786d503d8478dd7e4aea7d2e08
[INFO] running `Command { std: "docker" "start" "-a" "6d5ba68de1ba91a2a65ad668c02b2e30ff3ba3786d503d8478dd7e4aea7d2e08", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.109
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[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling fs-err v2.11.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]     Checking sharded-slab v0.1.7
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[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking zeroize v1.7.0
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[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking arc-swap v1.7.1
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[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling abscissa_derive v0.7.0
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]     Checking color-eyre v0.6.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking abscissa_core v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/error/message.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string::ToString,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/thread/manager.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{convert::TryInto, sync};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/error/message.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string::ToString,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/thread/manager.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{convert::TryInto, sync};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> src/runnable.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait RunnableMut {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] 17 |     /// Run this `RunnableMut`
[INFO] [stdout] 18 |     fn run(&mut self);
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> src/runnable.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait RunnableMut {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] 17 |     /// Run this `RunnableMut`
[INFO] [stdout] 18 |     fn run(&mut self);
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.42s
[INFO] running `Command { std: "docker" "inspect" "6d5ba68de1ba91a2a65ad668c02b2e30ff3ba3786d503d8478dd7e4aea7d2e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d5ba68de1ba91a2a65ad668c02b2e30ff3ba3786d503d8478dd7e4aea7d2e08", kill_on_drop: false }`
[INFO] [stdout] 6d5ba68de1ba91a2a65ad668c02b2e30ff3ba3786d503d8478dd7e4aea7d2e08