[INFO] fetching crate mdbook-dtmo 0.15.1...
[INFO] checking mdbook-dtmo-0.15.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mdbook-dtmo 0.15.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mdbook-dtmo 0.15.1 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 mdbook-dtmo 0.15.1
[INFO] finished tweaking crates.io crate mdbook-dtmo 0.15.1
[INFO] tweaked toml for crates.io crate mdbook-dtmo 0.15.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdbook-dtmo 0.15.1 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" "+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 tungstenite v0.18.0
[INFO] [stderr]   Downloaded pin-project-lite v0.2.10
[INFO] [stderr]   Downloaded toml_datetime v0.5.1
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[INFO] [stderr]   Downloaded mdbook-open-on-gh v2.4.1
[INFO] [stderr]   Downloaded tokio-tungstenite v0.18.0
[INFO] [stderr]   Downloaded mdbook-toc v0.14.1
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[INFO] [stderr]   Downloaded serde v1.0.181
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[INFO] [stderr]   Downloaded semver v1.0.18
[INFO] [stderr]   Downloaded tempfile v3.7.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.2
[INFO] [stderr]   Downloaded pin-project v1.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] abeb18b473061d1abcccc03da58e09e798bc55011c0898c7da5640dcab9a08e1
[INFO] running `Command { std: "docker" "start" "-a" "abeb18b473061d1abcccc03da58e09e798bc55011c0898c7da5640dcab9a08e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abeb18b473061d1abcccc03da58e09e798bc55011c0898c7da5640dcab9a08e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abeb18b473061d1abcccc03da58e09e798bc55011c0898c7da5640dcab9a08e1", kill_on_drop: false }`
[INFO] [stdout] abeb18b473061d1abcccc03da58e09e798bc55011c0898c7da5640dcab9a08e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7b4a0550d3e89db32311b8753f20f80706b42e1ba5340ae24f983c9b926aa2b5
[INFO] running `Command { std: "docker" "start" "-a" "7b4a0550d3e89db32311b8753f20f80706b42e1ba5340ae24f983c9b926aa2b5", kill_on_drop: false }`
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[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]     Checking inotify v0.9.6
[INFO] [stderr]     Checking tungstenite v0.18.0
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[INFO] [stderr]    Compiling pin-project-internal v1.1.2
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[INFO] [stderr]     Checking headers v0.3.8
[INFO] [stderr]     Checking pin-project v1.1.2
[INFO] [stderr]    Compiling pest_generator v2.7.2
[INFO] [stderr]     Checking globset v0.4.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
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[INFO] [stderr]     Checking humantime v2.1.0
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[INFO] [stderr]     Checking iana-time-zone v0.1.57
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[INFO] [stderr]    Compiling pest_derive v2.7.2
[INFO] [stderr]     Checking opener v0.6.1
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking topological-sort v0.2.2
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[INFO] [stderr]     Checking combine v4.6.6
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[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]     Checking handlebars v4.3.7
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking xml5ever v0.17.0
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
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[INFO] [stderr]     Checking diff v0.1.13
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[INFO] [stderr]     Checking assert_cmd v2.0.12
[INFO] [stderr]     Checking ammonia v3.3.0
[INFO] [stderr]     Checking markup5ever_rcdom v0.2.0
[INFO] [stderr]     Checking select v0.6.0
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[INFO] [stderr]     Checking toml_edit v0.15.0
[INFO] [stderr]     Checking warp v0.3.5
[INFO] [stderr]     Checking mdbook v0.4.33
[INFO] [stderr]     Checking mdbook-open-on-gh v2.4.1
[INFO] [stderr]     Checking mdbook-toc v0.14.1
[INFO] [stderr]     Checking mdbook-mermaid v0.12.6
[INFO] [stderr]     Checking mdbook-dtmo v0.15.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Arg` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Arg` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ArgMatches` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `ArgMatches` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Command` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Command` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arg` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Arg` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ArgMatches` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `ArgMatches` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Command` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Command` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `Command { std: "docker" "inspect" "7b4a0550d3e89db32311b8753f20f80706b42e1ba5340ae24f983c9b926aa2b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4a0550d3e89db32311b8753f20f80706b42e1ba5340ae24f983c9b926aa2b5", kill_on_drop: false }`
[INFO] [stdout] 7b4a0550d3e89db32311b8753f20f80706b42e1ba5340ae24f983c9b926aa2b5
[INFO] checking mdbook-dtmo-0.15.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate mdbook-dtmo 0.15.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mdbook-dtmo 0.15.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-dtmo 0.15.1
[INFO] finished tweaking crates.io crate mdbook-dtmo 0.15.1
[INFO] tweaked toml for crates.io crate mdbook-dtmo 0.15.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate mdbook-dtmo 0.15.1 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] accfdc1490950ca9b527de66d8d5bdb66d28d28b36edeeae42908d60bad905eb
[INFO] running `Command { std: "docker" "start" "-a" "accfdc1490950ca9b527de66d8d5bdb66d28d28b36edeeae42908d60bad905eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "accfdc1490950ca9b527de66d8d5bdb66d28d28b36edeeae42908d60bad905eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "accfdc1490950ca9b527de66d8d5bdb66d28d28b36edeeae42908d60bad905eb", kill_on_drop: false }`
[INFO] [stdout] accfdc1490950ca9b527de66d8d5bdb66d28d28b36edeeae42908d60bad905eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2725aa805e6390fbf5c90a498e4b1bbcd2cd0cccf4e1d070f7d66451daae644f
[INFO] running `Command { std: "docker" "start" "-a" "2725aa805e6390fbf5c90a498e4b1bbcd2cd0cccf4e1d070f7d66451daae644f", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `Arg` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Arg` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ArgMatches` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `ArgMatches` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Command` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Command` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arg` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Arg` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ArgMatches` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `ArgMatches` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Command` is imported redundantly
[INFO] [stdout]  --> src/cmd/test.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::command_prelude::*;
[INFO] [stdout]   |     ------------------------- the item `Command` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use clap::{Arg, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 47s
[INFO] running `Command { std: "docker" "inspect" "2725aa805e6390fbf5c90a498e4b1bbcd2cd0cccf4e1d070f7d66451daae644f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2725aa805e6390fbf5c90a498e4b1bbcd2cd0cccf4e1d070f7d66451daae644f", kill_on_drop: false }`
[INFO] [stdout] 2725aa805e6390fbf5c90a498e4b1bbcd2cd0cccf4e1d070f7d66451daae644f