[INFO] cloning repository https://github.com/nothking/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nothking/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnothking%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnothking%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 062730317529650a792eab8058ab8c806f3a612f
[INFO] checking nothking/rust_study against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnothking%2Frust_study" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nothking/rust_study on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nothking/rust_study
[INFO] finished tweaking git repo https://github.com/nothking/rust_study
[INFO] tweaked toml for git repo https://github.com/nothking/rust_study written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/nothking/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 615da864722c6433e776127c1982f9a459280a6537250f15f3411a872d62c6ed
[INFO] running `Command { std: "docker" "start" "-a" "615da864722c6433e776127c1982f9a459280a6537250f15f3411a872d62c6ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "615da864722c6433e776127c1982f9a459280a6537250f15f3411a872d62c6ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "615da864722c6433e776127c1982f9a459280a6537250f15f3411a872d62c6ed", kill_on_drop: false }`
[INFO] [stdout] 615da864722c6433e776127c1982f9a459280a6537250f15f3411a872d62c6ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4d501a33a999e4cdf1d409f96d68e46b411a4ea611d52231bd50927126fe725
[INFO] running `Command { std: "docker" "start" "-a" "c4d501a33a999e4cdf1d409f96d68e46b411a4ea611d52231bd50927126fe725", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
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[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling nix v0.17.0
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[INFO] [stderr]    Compiling crunchy v0.2.2
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[INFO] [stderr]    Compiling lexical-core v0.6.8
[INFO] [stderr]     Checking generic-array v0.12.4
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[INFO] [stderr]     Checking unicode-normalization v0.1.19
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[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling io-enum v0.2.6
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[INFO] [stderr]    Compiling hashbrown v0.6.3
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[INFO] [stderr]     Checking rand v0.5.6
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[INFO] [stderr]     Checking rust_decimal v1.16.0
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking rand_core v0.6.3
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[INFO] [stderr]     Checking rand_chacha v0.2.2
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[INFO] [stderr]     Checking const-random v0.1.13
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[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking lru v0.4.3
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[INFO] [stderr]     Checking twox-hash v1.6.1
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking mysql_common v0.20.2
[INFO] [stderr]     Checking rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::From`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Into`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::From`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Into`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.43s
[INFO] running `Command { std: "docker" "inspect" "c4d501a33a999e4cdf1d409f96d68e46b411a4ea611d52231bd50927126fe725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d501a33a999e4cdf1d409f96d68e46b411a4ea611d52231bd50927126fe725", kill_on_drop: false }`
[INFO] [stdout] c4d501a33a999e4cdf1d409f96d68e46b411a4ea611d52231bd50927126fe725