[INFO] fetching crate basic_trie 1.2.3...
[INFO] checking basic_trie-1.2.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate basic_trie 1.2.3 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate basic_trie 1.2.3 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 basic_trie 1.2.3
[INFO] finished tweaking crates.io crate basic_trie 1.2.3
[INFO] tweaked toml for crates.io crate basic_trie 1.2.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages
[INFO] [stderr]       Adding byteorder v0.5.3 (latest: v1.5.0)
[INFO] [stderr]       Adding iter-read v0.3.1 (latest: v1.0.1)
[INFO] [stderr]       Adding unicode-segmentation v1.10.1 (latest: v1.11.0)
[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 peak_alloc v0.2.1
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded iter-read v0.3.1
[INFO] [stderr]   Downloaded cbor v0.4.1
[INFO] [stderr]   Downloaded thin-vec v0.2.13
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded serde-pickle v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a9fe9777c5b3a6719ff8e9fb8433fbd98f0755b26fdc7cd0abcd849fea252288
[INFO] running `Command { std: "docker" "start" "-a" "a9fe9777c5b3a6719ff8e9fb8433fbd98f0755b26fdc7cd0abcd849fea252288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9fe9777c5b3a6719ff8e9fb8433fbd98f0755b26fdc7cd0abcd849fea252288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9fe9777c5b3a6719ff8e9fb8433fbd98f0755b26fdc7cd0abcd849fea252288", kill_on_drop: false }`
[INFO] [stdout] a9fe9777c5b3a6719ff8e9fb8433fbd98f0755b26fdc7cd0abcd849fea252288
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 741a72458d6fcb3bca6901c75e7f03d0847cf53aa7d90c3b0fc775e778c56bb6
[INFO] running `Command { std: "docker" "start" "-a" "741a72458d6fcb3bca6901c75e7f03d0847cf53aa7d90c3b0fc775e778c56bb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking iter-read v0.3.1
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking thin-vec v0.2.13
[INFO] [stderr]     Checking peak_alloc v0.2.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking basic_trie v1.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cbor v0.4.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking serde-pickle v1.1.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.66s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cbor v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "741a72458d6fcb3bca6901c75e7f03d0847cf53aa7d90c3b0fc775e778c56bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "741a72458d6fcb3bca6901c75e7f03d0847cf53aa7d90c3b0fc775e778c56bb6", kill_on_drop: false }`
[INFO] [stdout] 741a72458d6fcb3bca6901c75e7f03d0847cf53aa7d90c3b0fc775e778c56bb6