[INFO] fetching crate simplewebserver 0.1.2...
[INFO] checking simplewebserver-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate simplewebserver 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate simplewebserver 0.1.2 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 simplewebserver 0.1.2
[INFO] finished tweaking crates.io crate simplewebserver 0.1.2
[INFO] tweaked toml for crates.io crate simplewebserver 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate simplewebserver 0.1.2 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 predicates-tree v1.0.4
[INFO] [stderr]   Downloaded time v0.3.5
[INFO] [stderr]   Downloaded predicates v2.1.0
[INFO] [stderr]   Downloaded flexi_logger v0.22.2
[INFO] [stderr]   Downloaded assert_cmd v2.0.2
[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] c5a514597517704882f018b085107367459fd27b684f7048ee92bc092f0628d2
[INFO] running `Command { std: "docker" "start" "-a" "c5a514597517704882f018b085107367459fd27b684f7048ee92bc092f0628d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5a514597517704882f018b085107367459fd27b684f7048ee92bc092f0628d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5a514597517704882f018b085107367459fd27b684f7048ee92bc092f0628d2", kill_on_drop: false }`
[INFO] [stdout] c5a514597517704882f018b085107367459fd27b684f7048ee92bc092f0628d2
[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] 1bd7504b2a10f3b35d20184c15ce01cefd00ecd98fc083d247f0bb261dbd9fa3
[INFO] running `Command { std: "docker" "start" "-a" "1bd7504b2a10f3b35d20184c15ce01cefd00ecd98fc083d247f0bb261dbd9fa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking time v0.3.5
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking predicates v2.1.0
[INFO] [stderr]     Checking assert_cmd v2.0.2
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking flexi_logger v0.22.2
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.10
[INFO] [stderr]     Checking hyper v0.14.16
[INFO] [stderr]     Checking simplewebserver v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `flexi_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flexi_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `flexi_logger` 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 `flexi_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flexi_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `flexi_logger` 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 20.07s
[INFO] running `Command { std: "docker" "inspect" "1bd7504b2a10f3b35d20184c15ce01cefd00ecd98fc083d247f0bb261dbd9fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bd7504b2a10f3b35d20184c15ce01cefd00ecd98fc083d247f0bb261dbd9fa3", kill_on_drop: false }`
[INFO] [stdout] 1bd7504b2a10f3b35d20184c15ce01cefd00ecd98fc083d247f0bb261dbd9fa3
[INFO] checking simplewebserver-0.1.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate simplewebserver 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate simplewebserver 0.1.2 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 simplewebserver 0.1.2
[INFO] finished tweaking crates.io crate simplewebserver 0.1.2
[INFO] tweaked toml for crates.io crate simplewebserver 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate simplewebserver 0.1.2 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] ed700be9c2d6a23908cd3fbddc042b5e8b879b2bbaa3dd0ab4f6a5c9a04d362a
[INFO] running `Command { std: "docker" "start" "-a" "ed700be9c2d6a23908cd3fbddc042b5e8b879b2bbaa3dd0ab4f6a5c9a04d362a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed700be9c2d6a23908cd3fbddc042b5e8b879b2bbaa3dd0ab4f6a5c9a04d362a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed700be9c2d6a23908cd3fbddc042b5e8b879b2bbaa3dd0ab4f6a5c9a04d362a", kill_on_drop: false }`
[INFO] [stdout] ed700be9c2d6a23908cd3fbddc042b5e8b879b2bbaa3dd0ab4f6a5c9a04d362a
[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] af6c2a31909c305e0e02648bb052c3090d838fbfdaf18f7fcccfabcea9b8bdc1
[INFO] running `Command { std: "docker" "start" "-a" "af6c2a31909c305e0e02648bb052c3090d838fbfdaf18f7fcccfabcea9b8bdc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking time v0.3.5
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking predicates v2.1.0
[INFO] [stderr]     Checking assert_cmd v2.0.2
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking flexi_logger v0.22.2
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.10
[INFO] [stderr]     Checking hyper v0.14.16
[INFO] [stderr]     Checking simplewebserver v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `flexi_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flexi_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `flexi_logger` 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 `flexi_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flexi_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `flexi_logger` 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 18.56s
[INFO] running `Command { std: "docker" "inspect" "af6c2a31909c305e0e02648bb052c3090d838fbfdaf18f7fcccfabcea9b8bdc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6c2a31909c305e0e02648bb052c3090d838fbfdaf18f7fcccfabcea9b8bdc1", kill_on_drop: false }`
[INFO] [stdout] af6c2a31909c305e0e02648bb052c3090d838fbfdaf18f7fcccfabcea9b8bdc1