[INFO] fetching crate branchify 0.1.0...
[INFO] checking branchify-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate branchify 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate branchify 0.1.0 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 branchify 0.1.0
[INFO] finished tweaking crates.io crate branchify 0.1.0
[INFO] tweaked toml for crates.io crate branchify 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate branchify 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 362a33bb90493a26dc6fc5f2faff4512ae32f2ceccde56abb5cf1ed9489561d9
[INFO] running `Command { std: "docker" "start" "-a" "362a33bb90493a26dc6fc5f2faff4512ae32f2ceccde56abb5cf1ed9489561d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "362a33bb90493a26dc6fc5f2faff4512ae32f2ceccde56abb5cf1ed9489561d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362a33bb90493a26dc6fc5f2faff4512ae32f2ceccde56abb5cf1ed9489561d9", kill_on_drop: false }`
[INFO] [stdout] 362a33bb90493a26dc6fc5f2faff4512ae32f2ceccde56abb5cf1ed9489561d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 40e4f40aa37fc7ba3c67178dfd3c7246e68257d1302a8963221d5e7ab0685162
[INFO] running `Command { std: "docker" "start" "-a" "40e4f40aa37fc7ba3c67178dfd3c7246e68257d1302a8963221d5e7ab0685162", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking branchify v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let arguments = args.clone();
[INFO] [stdout]    |                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[String]` does not implement `Clone`, so calling `clone` on `&[String]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let arguments = args.clone();
[INFO] [stdout]    |                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[String]` does not implement `Clone`, so calling `clone` on `&[String]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `branchify` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use branchify;
[INFO] [stdout]   |     ^^^^^^^^^ the item `branchify` 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 `branchify` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use branchify;
[INFO] [stdout]   |     ^^^^^^^^^ the item `branchify` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "40e4f40aa37fc7ba3c67178dfd3c7246e68257d1302a8963221d5e7ab0685162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e4f40aa37fc7ba3c67178dfd3c7246e68257d1302a8963221d5e7ab0685162", kill_on_drop: false }`
[INFO] [stdout] 40e4f40aa37fc7ba3c67178dfd3c7246e68257d1302a8963221d5e7ab0685162
[INFO] checking branchify-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate branchify 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate branchify 0.1.0 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 branchify 0.1.0
[INFO] finished tweaking crates.io crate branchify 0.1.0
[INFO] tweaked toml for crates.io crate branchify 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate branchify 0.1.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2998a9a67972d4eacbea69d16553faf5b97d82d6b894cf4d44651305a2ce1969
[INFO] running `Command { std: "docker" "start" "-a" "2998a9a67972d4eacbea69d16553faf5b97d82d6b894cf4d44651305a2ce1969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2998a9a67972d4eacbea69d16553faf5b97d82d6b894cf4d44651305a2ce1969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2998a9a67972d4eacbea69d16553faf5b97d82d6b894cf4d44651305a2ce1969", kill_on_drop: false }`
[INFO] [stdout] 2998a9a67972d4eacbea69d16553faf5b97d82d6b894cf4d44651305a2ce1969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fd684b409103ea143316e14a8f767e61758adce6024e68fe3f890bb5ab0a1a0e
[INFO] running `Command { std: "docker" "start" "-a" "fd684b409103ea143316e14a8f767e61758adce6024e68fe3f890bb5ab0a1a0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking branchify v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let arguments = args.clone();
[INFO] [stdout]    |                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[String]` does not implement `Clone`, so calling `clone` on `&[String]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let arguments = args.clone();
[INFO] [stdout]    |                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[String]` does not implement `Clone`, so calling `clone` on `&[String]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `branchify` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use branchify;
[INFO] [stdout]   |     ^^^^^^^^^ the item `branchify` 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 `branchify` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use branchify;
[INFO] [stdout]   |     ^^^^^^^^^ the item `branchify` 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 4.04s
[INFO] running `Command { std: "docker" "inspect" "fd684b409103ea143316e14a8f767e61758adce6024e68fe3f890bb5ab0a1a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd684b409103ea143316e14a8f767e61758adce6024e68fe3f890bb5ab0a1a0e", kill_on_drop: false }`
[INFO] [stdout] fd684b409103ea143316e14a8f767e61758adce6024e68fe3f890bb5ab0a1a0e