[INFO] cloning repository https://github.com/5l1v3r1/part1_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/5l1v3r1/part1_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5l1v3r1%2Fpart1_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5l1v3r1%2Fpart1_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d890adb296716c3952920b359a53d8b396cf5f41
[INFO] checking 5l1v3r1/part1_cargo against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5l1v3r1%2Fpart1_cargo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/5l1v3r1/part1_cargo 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 git repo https://github.com/5l1v3r1/part1_cargo
[INFO] finished tweaking git repo https://github.com/5l1v3r1/part1_cargo
[INFO] tweaked toml for git repo https://github.com/5l1v3r1/part1_cargo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/5l1v3r1/part1_cargo 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] warning: unused manifest key: package.author
[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] 8ab6f44c23e245515cb4f6d56a0699935fcd156fd472fa94bf3785dd9a6a6dc6
[INFO] running `Command { std: "docker" "start" "-a" "8ab6f44c23e245515cb4f6d56a0699935fcd156fd472fa94bf3785dd9a6a6dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ab6f44c23e245515cb4f6d56a0699935fcd156fd472fa94bf3785dd9a6a6dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab6f44c23e245515cb4f6d56a0699935fcd156fd472fa94bf3785dd9a6a6dc6", kill_on_drop: false }`
[INFO] [stdout] 8ab6f44c23e245515cb4f6d56a0699935fcd156fd472fa94bf3785dd9a6a6dc6
[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] 53deb0cf9b21319ebc50d6b69e25e5d2fd94f451edbea5910c31d89f109dd8f5
[INFO] running `Command { std: "docker" "start" "-a" "53deb0cf9b21319ebc50d6b69e25e5d2fd94f451edbea5910c31d89f109dd8f5", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking web_server_part1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "53deb0cf9b21319ebc50d6b69e25e5d2fd94f451edbea5910c31d89f109dd8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53deb0cf9b21319ebc50d6b69e25e5d2fd94f451edbea5910c31d89f109dd8f5", kill_on_drop: false }`
[INFO] [stdout] 53deb0cf9b21319ebc50d6b69e25e5d2fd94f451edbea5910c31d89f109dd8f5
[INFO] checking 5l1v3r1/part1_cargo against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5l1v3r1%2Fpart1_cargo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/5l1v3r1/part1_cargo 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 git repo https://github.com/5l1v3r1/part1_cargo
[INFO] finished tweaking git repo https://github.com/5l1v3r1/part1_cargo
[INFO] tweaked toml for git repo https://github.com/5l1v3r1/part1_cargo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/5l1v3r1/part1_cargo 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] [stderr] warning: unused manifest key: package.author
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0b75d041bce6096ecf5f9adf27752f9d06414bb0a0af0224193d38ef20c97b3c
[INFO] running `Command { std: "docker" "start" "-a" "0b75d041bce6096ecf5f9adf27752f9d06414bb0a0af0224193d38ef20c97b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b75d041bce6096ecf5f9adf27752f9d06414bb0a0af0224193d38ef20c97b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b75d041bce6096ecf5f9adf27752f9d06414bb0a0af0224193d38ef20c97b3c", kill_on_drop: false }`
[INFO] [stdout] 0b75d041bce6096ecf5f9adf27752f9d06414bb0a0af0224193d38ef20c97b3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bb9ae54414e03981622edbb73ac3f65a03753da86de4382ffc6aabfab6aa1492
[INFO] running `Command { std: "docker" "start" "-a" "bb9ae54414e03981622edbb73ac3f65a03753da86de4382ffc6aabfab6aa1492", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking web_server_part1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = server.listen("127.0.0.1:6767");
[INFO] [stdout]   |     +++++++
[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 9.70s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "bb9ae54414e03981622edbb73ac3f65a03753da86de4382ffc6aabfab6aa1492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb9ae54414e03981622edbb73ac3f65a03753da86de4382ffc6aabfab6aa1492", kill_on_drop: false }`
[INFO] [stdout] bb9ae54414e03981622edbb73ac3f65a03753da86de4382ffc6aabfab6aa1492