[INFO] cloning repository https://github.com/Jiuhong-casperlabs/flash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jiuhong-casperlabs/flash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 696aca54218947eceaf5e0b01b7b46cf225a7223
[INFO] checking Jiuhong-casperlabs/flash against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash" "/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/Jiuhong-casperlabs/flash 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/Jiuhong-casperlabs/flash
[INFO] finished tweaking git repo https://github.com/Jiuhong-casperlabs/flash
[INFO] tweaked toml for git repo https://github.com/Jiuhong-casperlabs/flash written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jiuhong-casperlabs/flash 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uint v0.9.1
[INFO] [stderr]   Downloaded ff v0.8.0
[INFO] [stderr]   Downloaded group v0.8.0
[INFO] [stderr]   Downloaded elliptic-curve v0.8.5
[INFO] [stderr]   Downloaded signature v1.2.2
[INFO] [stderr]   Downloaded ecdsa v0.10.2
[INFO] [stderr]   Downloaded k256 v0.7.3
[INFO] [stderr]   Downloaded bitvec v0.18.5
[INFO] [stderr]   Downloaded zeroize_derive v1.3.1
[INFO] [stderr]   Downloaded casper-types v1.4.6
[INFO] [stderr]   Downloaded casper-contract v1.4.3
[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] 9374422751d0dad843254251de35c5367b70ab05e66a54daa7593d685909666c
[INFO] running `Command { std: "docker" "start" "-a" "9374422751d0dad843254251de35c5367b70ab05e66a54daa7593d685909666c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9374422751d0dad843254251de35c5367b70ab05e66a54daa7593d685909666c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9374422751d0dad843254251de35c5367b70ab05e66a54daa7593d685909666c", kill_on_drop: false }`
[INFO] [stdout] 9374422751d0dad843254251de35c5367b70ab05e66a54daa7593d685909666c
[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] edd0697f85317c22e8a812dc62df477870e72af1be6adf4716195c265e5950bd
[INFO] running `Command { std: "docker" "start" "-a" "edd0697f85317c22e8a812dc62df477870e72af1be6adf4716195c265e5950bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling serde_json v1.0.75
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking bitvec v0.18.5
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]     Checking base16 v0.2.1
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking ld-contract v0.1.0 (/opt/rustwide/workdir/example/ld-contract)
[INFO] [stderr]     Checking uint v0.9.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.10.1
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking signature v1.2.2
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking ed25519 v1.2.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking wee_alloc v0.4.5
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]    Compiling zeroize_derive v1.3.1
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]     Checking zeroize v1.5.0
[INFO] [stderr]     Checking elliptic-curve v0.8.5
[INFO] [stderr]     Checking curve25519-dalek v3.2.0
[INFO] [stderr]     Checking ecdsa v0.10.2
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking k256 v0.7.3
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking casper-types v1.4.6
[INFO] [stderr]     Checking casper-contract v1.4.3
[INFO] [stderr]     Checking casper-erc20 v0.2.1 (/opt/rustwide/workdir/erc20)
[INFO] [stderr]     Checking flashborrower v0.1.0 (/opt/rustwide/workdir/flashborrower)
[INFO] [stderr]     Checking flashlender v0.1.0 (/opt/rustwide/workdir/flashlender)
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashborrower/src/entry_points.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashborrower/src/entry_points.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashlender/src/entry_points.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec, vec::Vec};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> flashlender/src/entry_points.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec, vec::Vec};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `casper_types` is imported redundantly
[INFO] [stdout]  --> flashlender/src/flashlend.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self, bytesrepr::Bytes, runtime_args, system::CallStackElement, RuntimeArgs, U256,
[INFO] [stdout]   |     ^^^^ the item `casper_types` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashlender/src/tokens.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashlender/src/entry_points.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec, vec::Vec};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> flashlender/src/entry_points.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{string::String, vec, vec::Vec};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `casper_types` is imported redundantly
[INFO] [stdout]  --> flashlender/src/flashlend.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self, bytesrepr::Bytes, runtime_args, system::CallStackElement, RuntimeArgs, U256,
[INFO] [stdout]   |     ^^^^ the item `casper_types` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> flashlender/src/tokens.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking br-contract v0.1.0 (/opt/rustwide/workdir/example/br-contract)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.00s
[INFO] running `Command { std: "docker" "inspect" "edd0697f85317c22e8a812dc62df477870e72af1be6adf4716195c265e5950bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edd0697f85317c22e8a812dc62df477870e72af1be6adf4716195c265e5950bd", kill_on_drop: false }`
[INFO] [stdout] edd0697f85317c22e8a812dc62df477870e72af1be6adf4716195c265e5950bd