[INFO] fetching crate ustc_cas 0.2.0...
[INFO] checking ustc_cas-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ustc_cas 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ustc_cas 0.2.0 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 ustc_cas 0.2.0
[INFO] finished tweaking crates.io crate ustc_cas 0.2.0
[INFO] tweaked toml for crates.io crate ustc_cas 0.2.0 written to /workspace/builds/worker-5-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 166 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cookie v0.17.0 (latest: v0.18.1)
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[INFO] [stderr]       Adding foreign-types v0.3.2 (latest: v0.5.0)
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[INFO] [stderr]       Adding h2 v0.3.26 (latest: v0.4.4)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
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[INFO] [stderr]       Adding hyper v0.14.28 (latest: v1.2.0)
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[INFO] [stderr]       Adding hyper-tls v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding idna v0.3.0 (latest: v0.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
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[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
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[INFO] [stderr]       Adding tokio-rustls v0.24.1 (latest: v0.26.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding webpki-roots v0.25.4 (latest: v0.26.1)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding winreg v0.50.0 (latest: v0.52.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5b1136f047a820ac9033fcf7b9119b0de94ed0b1169cd7a78451190ce5bca96b
[INFO] running `Command { std: "docker" "start" "-a" "5b1136f047a820ac9033fcf7b9119b0de94ed0b1169cd7a78451190ce5bca96b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b1136f047a820ac9033fcf7b9119b0de94ed0b1169cd7a78451190ce5bca96b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1136f047a820ac9033fcf7b9119b0de94ed0b1169cd7a78451190ce5bca96b", kill_on_drop: false }`
[INFO] [stdout] 5b1136f047a820ac9033fcf7b9119b0de94ed0b1169cd7a78451190ce5bca96b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] ea3754b9bc82719d24b4d6717bce7f8c09a03fa32964ba83f40fef9eafaa3a8d
[INFO] running `Command { std: "docker" "start" "-a" "ea3754b9bc82719d24b4d6717bce7f8c09a03fa32964ba83f40fef9eafaa3a8d", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking openssl-sys v0.9.102
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cookie v0.17.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking psl-types v2.0.11
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
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[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking publicsuffix v2.2.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking openssl v0.10.64
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking cookie_store v0.20.0
[INFO] [stderr]     Checking native-tls v0.2.11
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking ustc_cas v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/validate_code.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[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]  --> src/validate_code.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[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: 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 22.19s
[INFO] running `Command { std: "docker" "inspect" "ea3754b9bc82719d24b4d6717bce7f8c09a03fa32964ba83f40fef9eafaa3a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea3754b9bc82719d24b4d6717bce7f8c09a03fa32964ba83f40fef9eafaa3a8d", kill_on_drop: false }`
[INFO] [stdout] ea3754b9bc82719d24b4d6717bce7f8c09a03fa32964ba83f40fef9eafaa3a8d