[INFO] cloning repository https://github.com/guilhermerochas/machinery
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guilhermerochas/machinery" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilhermerochas%2Fmachinery", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilhermerochas%2Fmachinery'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7243b81d08957a01dcb5ff44e9b6a9a35de66148
[INFO] checking guilhermerochas/machinery against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilhermerochas%2Fmachinery" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guilhermerochas/machinery 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/guilhermerochas/machinery
[INFO] finished tweaking git repo https://github.com/guilhermerochas/machinery
[INFO] tweaked toml for git repo https://github.com/guilhermerochas/machinery written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/guilhermerochas/machinery 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]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.3.9
[INFO] [stderr]   Downloaded async-process v1.1.0
[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] 60a24d658b073d9578f49ab21e1489e882fb43764b0c0b45c87b8dfa7c94f315
[INFO] running `Command { std: "docker" "start" "-a" "60a24d658b073d9578f49ab21e1489e882fb43764b0c0b45c87b8dfa7c94f315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60a24d658b073d9578f49ab21e1489e882fb43764b0c0b45c87b8dfa7c94f315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60a24d658b073d9578f49ab21e1489e882fb43764b0c0b45c87b8dfa7c94f315", kill_on_drop: false }`
[INFO] [stdout] 60a24d658b073d9578f49ab21e1489e882fb43764b0c0b45c87b8dfa7c94f315
[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] f8cf4aac24b6d2a0013905544c1626056b0d5748550a4b75c8186a745263ea24
[INFO] running `Command { std: "docker" "start" "-a" "f8cf4aac24b6d2a0013905544c1626056b0d5748550a4b75c8186a745263ea24", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-net v1.6.1
[INFO] [stderr]     Checking async-process v1.1.0
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]     Checking machinery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.30s
[INFO] running `Command { std: "docker" "inspect" "f8cf4aac24b6d2a0013905544c1626056b0d5748550a4b75c8186a745263ea24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8cf4aac24b6d2a0013905544c1626056b0d5748550a4b75c8186a745263ea24", kill_on_drop: false }`
[INFO] [stdout] f8cf4aac24b6d2a0013905544c1626056b0d5748550a4b75c8186a745263ea24
[INFO] checking guilhermerochas/machinery against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilhermerochas%2Fmachinery" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guilhermerochas/machinery 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/guilhermerochas/machinery
[INFO] finished tweaking git repo https://github.com/guilhermerochas/machinery
[INFO] tweaked toml for git repo https://github.com/guilhermerochas/machinery written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/guilhermerochas/machinery 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] 40e9b85474c3b8844a25d096848d1ffcc73c741816b3fcac5f4b97caea67d6a2
[INFO] running `Command { std: "docker" "start" "-a" "40e9b85474c3b8844a25d096848d1ffcc73c741816b3fcac5f4b97caea67d6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40e9b85474c3b8844a25d096848d1ffcc73c741816b3fcac5f4b97caea67d6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e9b85474c3b8844a25d096848d1ffcc73c741816b3fcac5f4b97caea67d6a2", kill_on_drop: false }`
[INFO] [stdout] 40e9b85474c3b8844a25d096848d1ffcc73c741816b3fcac5f4b97caea67d6a2
[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] 1e357414bc2f325f2d580e147a72a99e82c049e1bae4687e55364f96d7c6fb32
[INFO] running `Command { std: "docker" "start" "-a" "1e357414bc2f325f2d580e147a72a99e82c049e1bae4687e55364f96d7c6fb32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-process v1.1.0
[INFO] [stderr]     Checking async-net v1.6.1
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]     Checking machinery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `Command { std: "docker" "inspect" "1e357414bc2f325f2d580e147a72a99e82c049e1bae4687e55364f96d7c6fb32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e357414bc2f325f2d580e147a72a99e82c049e1bae4687e55364f96d7c6fb32", kill_on_drop: false }`
[INFO] [stdout] 1e357414bc2f325f2d580e147a72a99e82c049e1bae4687e55364f96d7c6fb32