[INFO] cloning repository https://github.com/ha-spring/rust-echo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ha-spring/rust-echo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-spring%2Frust-echo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-spring%2Frust-echo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5d38cba39c33fb47bc06e86f55b99aaf68e8c8b
[INFO] checking ha-spring/rust-echo against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-spring%2Frust-echo" "/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/ha-spring/rust-echo 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/ha-spring/rust-echo
[INFO] finished tweaking git repo https://github.com/ha-spring/rust-echo
[INFO] tweaked toml for git repo https://github.com/ha-spring/rust-echo written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ha-spring/rust-echo 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]     Blocking waiting for file lock on package cache
[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] 726c5e214898ede196b3470bb31bc4f6158b391a90af9c5e0dedfd64af890169
[INFO] running `Command { std: "docker" "start" "-a" "726c5e214898ede196b3470bb31bc4f6158b391a90af9c5e0dedfd64af890169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "726c5e214898ede196b3470bb31bc4f6158b391a90af9c5e0dedfd64af890169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "726c5e214898ede196b3470bb31bc4f6158b391a90af9c5e0dedfd64af890169", kill_on_drop: false }`
[INFO] [stdout] 726c5e214898ede196b3470bb31bc4f6158b391a90af9c5e0dedfd64af890169
[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] f8612ca0ca2c9208e94e1af50174d7a8a4f12a4f9c0da068bc99472a263a46af
[INFO] running `Command { std: "docker" "start" "-a" "f8612ca0ca2c9208e94e1af50174d7a8a4f12a4f9c0da068bc99472a263a46af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking bstr v1.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking predicates v3.0.3
[INFO] [stderr]     Checking assert_cmd v2.0.11
[INFO] [stderr]     Checking regex v1.8.3
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]     Checking echor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `Command { std: "docker" "inspect" "f8612ca0ca2c9208e94e1af50174d7a8a4f12a4f9c0da068bc99472a263a46af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8612ca0ca2c9208e94e1af50174d7a8a4f12a4f9c0da068bc99472a263a46af", kill_on_drop: false }`
[INFO] [stdout] f8612ca0ca2c9208e94e1af50174d7a8a4f12a4f9c0da068bc99472a263a46af
[INFO] checking ha-spring/rust-echo against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-spring%2Frust-echo" "/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/ha-spring/rust-echo 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/ha-spring/rust-echo
[INFO] finished tweaking git repo https://github.com/ha-spring/rust-echo
[INFO] tweaked toml for git repo https://github.com/ha-spring/rust-echo written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ha-spring/rust-echo 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] ef52f1c01862a0b12422d6cefff0c72379ac9877c02e966bd5615ecf9e42a60e
[INFO] running `Command { std: "docker" "start" "-a" "ef52f1c01862a0b12422d6cefff0c72379ac9877c02e966bd5615ecf9e42a60e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef52f1c01862a0b12422d6cefff0c72379ac9877c02e966bd5615ecf9e42a60e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef52f1c01862a0b12422d6cefff0c72379ac9877c02e966bd5615ecf9e42a60e", kill_on_drop: false }`
[INFO] [stdout] ef52f1c01862a0b12422d6cefff0c72379ac9877c02e966bd5615ecf9e42a60e
[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] 2d5ce0830c91a0d6f1da288d5256cf490da57db908fe34f05d8d45243fb2aedf
[INFO] running `Command { std: "docker" "start" "-a" "2d5ce0830c91a0d6f1da288d5256cf490da57db908fe34f05d8d45243fb2aedf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking bstr v1.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking predicates v3.0.3
[INFO] [stderr]     Checking assert_cmd v2.0.11
[INFO] [stderr]     Checking regex v1.8.3
[INFO] [stderr]     Checking echor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.54s
[INFO] running `Command { std: "docker" "inspect" "2d5ce0830c91a0d6f1da288d5256cf490da57db908fe34f05d8d45243fb2aedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d5ce0830c91a0d6f1da288d5256cf490da57db908fe34f05d8d45243fb2aedf", kill_on_drop: false }`
[INFO] [stdout] 2d5ce0830c91a0d6f1da288d5256cf490da57db908fe34f05d8d45243fb2aedf