[INFO] cloning repository https://github.com/birkenfeld/cachereg_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/birkenfeld/cachereg_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fcachereg_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fcachereg_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7164dbed07491ad09c550b9da57a154c1909268e
[INFO] checking birkenfeld/cachereg_rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fcachereg_rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/birkenfeld/cachereg_rs 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] removed /workspace/builds/worker-7-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/birkenfeld/cachereg_rs
[INFO] finished tweaking git repo https://github.com/birkenfeld/cachereg_rs
[INFO] tweaked toml for git repo https://github.com/birkenfeld/cachereg_rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/birkenfeld/cachereg_rs 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 build-env v0.3.1
[INFO] [stderr]   Downloaded utf8-cstr v0.1.6
[INFO] [stderr]   Downloaded cstr-argument v0.1.2
[INFO] [stderr]   Downloaded systemstat v0.2.3
[INFO] [stderr]   Downloaded mlzutil v0.3.0
[INFO] [stderr]   Downloaded systemd v0.10.0
[INFO] [stderr]   Downloaded dns-lookup v2.0.2
[INFO] [stderr]   Downloaded libsystemd-sys v0.9.3
[INFO] [stderr]   Downloaded bytesize v1.2.0
[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] 82d1cdc5031d327013c016310b0e852f0e33028fe4ae3849de4452845ce7825f
[INFO] running `Command { std: "docker" "start" "-a" "82d1cdc5031d327013c016310b0e852f0e33028fe4ae3849de4452845ce7825f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82d1cdc5031d327013c016310b0e852f0e33028fe4ae3849de4452845ce7825f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d1cdc5031d327013c016310b0e852f0e33028fe4ae3849de4452845ce7825f", kill_on_drop: false }`
[INFO] [stdout] 82d1cdc5031d327013c016310b0e852f0e33028fe4ae3849de4452845ce7825f
[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] e54d68728a82d092cfaff4cdefca2f37293ddf034588f79e3157960f939c1f10
[INFO] running `Command { std: "docker" "start" "-a" "e54d68728a82d092cfaff4cdefca2f37293ddf034588f79e3157960f939c1f10", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling build-env v0.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking bytesize v1.2.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
[INFO] [stderr]     Checking cstr-argument v0.1.2
[INFO] [stderr]     Checking utf8-cstr v0.1.6
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking bitflags v2.3.2
[INFO] [stderr]     Checking time v0.3.20
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling libsystemd-sys v0.9.3
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dns-lookup v2.0.2
[INFO] [stderr]     Checking systemstat v0.2.3
[INFO] [stderr]     Checking mlzutil v0.3.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling foreign-types-macros v0.2.3
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking foreign-types v0.5.0
[INFO] [stderr]     Checking systemd v0.10.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking cachereg v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mlzutil` is imported redundantly
[INFO] [stdout]   --> src/reg.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use mlzutil;
[INFO] [stdout]    |     ^^^^^^^ the item `mlzutil` 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 `mlzutil` is imported redundantly
[INFO] [stdout]   --> src/reg.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use mlzutil;
[INFO] [stdout]    |     ^^^^^^^ the item `mlzutil` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.58s
[INFO] running `Command { std: "docker" "inspect" "e54d68728a82d092cfaff4cdefca2f37293ddf034588f79e3157960f939c1f10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e54d68728a82d092cfaff4cdefca2f37293ddf034588f79e3157960f939c1f10", kill_on_drop: false }`
[INFO] [stdout] e54d68728a82d092cfaff4cdefca2f37293ddf034588f79e3157960f939c1f10
[INFO] checking birkenfeld/cachereg_rs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fcachereg_rs" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/birkenfeld/cachereg_rs 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] removed /workspace/builds/worker-7-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/birkenfeld/cachereg_rs
[INFO] finished tweaking git repo https://github.com/birkenfeld/cachereg_rs
[INFO] tweaked toml for git repo https://github.com/birkenfeld/cachereg_rs written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/birkenfeld/cachereg_rs 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] df760be6d06bc945a7eabe0dcfc4d2f6f7f829ff649fb3a1a2bed87f65b4a5f2
[INFO] running `Command { std: "docker" "start" "-a" "df760be6d06bc945a7eabe0dcfc4d2f6f7f829ff649fb3a1a2bed87f65b4a5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df760be6d06bc945a7eabe0dcfc4d2f6f7f829ff649fb3a1a2bed87f65b4a5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df760be6d06bc945a7eabe0dcfc4d2f6f7f829ff649fb3a1a2bed87f65b4a5f2", kill_on_drop: false }`
[INFO] [stdout] df760be6d06bc945a7eabe0dcfc4d2f6f7f829ff649fb3a1a2bed87f65b4a5f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 362b7fa7da345695e2b2c009a092effb554f0e7df4cb9538df206125ce500535
[INFO] running `Command { std: "docker" "start" "-a" "362b7fa7da345695e2b2c009a092effb554f0e7df4cb9538df206125ce500535", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling build-env v0.3.1
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking bytesize v1.2.0
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking cstr-argument v0.1.2
[INFO] [stderr]     Checking utf8-cstr v0.1.6
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking bitflags v2.3.2
[INFO] [stderr]     Checking time v0.3.20
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling libsystemd-sys v0.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dns-lookup v2.0.2
[INFO] [stderr]     Checking systemstat v0.2.3
[INFO] [stderr]     Checking mlzutil v0.3.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling foreign-types-macros v0.2.3
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking foreign-types v0.5.0
[INFO] [stderr]     Checking systemd v0.10.0
[INFO] [stderr]     Checking cachereg v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mlzutil` is imported redundantly
[INFO] [stdout]   --> src/reg.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use mlzutil;
[INFO] [stdout]    |     ^^^^^^^ the item `mlzutil` 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 `mlzutil` is imported redundantly
[INFO] [stdout]   --> src/reg.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use mlzutil;
[INFO] [stdout]    |     ^^^^^^^ the item `mlzutil` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.62s
[INFO] running `Command { std: "docker" "inspect" "362b7fa7da345695e2b2c009a092effb554f0e7df4cb9538df206125ce500535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362b7fa7da345695e2b2c009a092effb554f0e7df4cb9538df206125ce500535", kill_on_drop: false }`
[INFO] [stdout] 362b7fa7da345695e2b2c009a092effb554f0e7df4cb9538df206125ce500535