[INFO] fetching crate lang_tester 0.7.5...
[INFO] checking lang_tester-0.7.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate lang_tester 0.7.5 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate lang_tester 0.7.5 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 lang_tester 0.7.5
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lang_tester 0.7.5
[INFO] tweaked toml for crates.io crate lang_tester 0.7.5 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate lang_tester 0.7.5 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] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fm v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 880a9598e12ed62fc81e186e7925962cd731b9adc505f1f3910fc1c68b2501c3
[INFO] running `Command { std: "docker" "start" "-a" "880a9598e12ed62fc81e186e7925962cd731b9adc505f1f3910fc1c68b2501c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "880a9598e12ed62fc81e186e7925962cd731b9adc505f1f3910fc1c68b2501c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880a9598e12ed62fc81e186e7925962cd731b9adc505f1f3910fc1c68b2501c3", kill_on_drop: false }`
[INFO] [stdout] 880a9598e12ed62fc81e186e7925962cd731b9adc505f1f3910fc1c68b2501c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 37983c3be34573b744bc2a1e49c4292340ad8252b6470df8d900d520712f207d
[INFO] running `Command { std: "docker" "start" "-a" "37983c3be34573b744bc2a1e49c4292340ad8252b6470df8d900d520712f207d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking fm v0.2.1
[INFO] [stderr]     Checking lang_tester v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `Command { std: "docker" "inspect" "37983c3be34573b744bc2a1e49c4292340ad8252b6470df8d900d520712f207d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37983c3be34573b744bc2a1e49c4292340ad8252b6470df8d900d520712f207d", kill_on_drop: false }`
[INFO] [stdout] 37983c3be34573b744bc2a1e49c4292340ad8252b6470df8d900d520712f207d