[INFO] fetching crate bitsign 0.1.1...
[INFO] checking bitsign-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate bitsign 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate bitsign 0.1.1 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 bitsign 0.1.1
[INFO] finished tweaking crates.io crate bitsign 0.1.1
[INFO] tweaked toml for crates.io crate bitsign 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate bitsign 0.1.1 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 proc-macro-error v0.2.6
[INFO] [stderr]   Downloaded proc-macro2 v1.0.6
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded itoa v0.4.4
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded cc v1.0.41
[INFO] [stderr]   Downloaded ryu v1.0.2
[INFO] [stderr]   Downloaded structopt v0.3.3
[INFO] [stderr]   Downloaded structopt-derive v0.3.3
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded bech32 v0.7.1
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded bitcoin_hashes v0.7.1
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded unicode-segmentation v1.3.0
[INFO] [stderr]   Downloaded serde_json v1.0.41
[INFO] [stderr]   Downloaded serde v1.0.101
[INFO] [stderr]   Downloaded syn v1.0.5
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded bitcoin v0.21.0
[INFO] [stderr]   Downloaded secp256k1 v0.15.5
[INFO] [stderr]   Downloaded libc v0.2.65
[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] 01fe667cbd3a272d54faaf37e49bd8ee613ccd2c2d069af515cf734614962fb3
[INFO] running `Command { std: "docker" "start" "-a" "01fe667cbd3a272d54faaf37e49bd8ee613ccd2c2d069af515cf734614962fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01fe667cbd3a272d54faaf37e49bd8ee613ccd2c2d069af515cf734614962fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fe667cbd3a272d54faaf37e49bd8ee613ccd2c2d069af515cf734614962fb3", kill_on_drop: false }`
[INFO] [stdout] 01fe667cbd3a272d54faaf37e49bd8ee613ccd2c2d069af515cf734614962fb3
[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] ace165e25ba82be3de9c84dabd4d56ed2c555e2c3a1bb3322052938368fd5915
[INFO] running `Command { std: "docker" "start" "-a" "ace165e25ba82be3de9c84dabd4d56ed2c555e2c3a1bb3322052938368fd5915", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking bech32 v0.7.1
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling secp256k1 v0.15.5
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking bitcoin_hashes v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking bitcoin v0.21.0
[INFO] [stderr]     Checking bitsign v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | use serde_json::{self, json, Value};
[INFO] [stdout]    |                  ^^^^ the item `serde_json` 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 `serde_json` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | use serde_json::{self, json, Value};
[INFO] [stdout]    |                  ^^^^ the item `serde_json` 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 14.97s
[INFO] running `Command { std: "docker" "inspect" "ace165e25ba82be3de9c84dabd4d56ed2c555e2c3a1bb3322052938368fd5915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace165e25ba82be3de9c84dabd4d56ed2c555e2c3a1bb3322052938368fd5915", kill_on_drop: false }`
[INFO] [stdout] ace165e25ba82be3de9c84dabd4d56ed2c555e2c3a1bb3322052938368fd5915