[INFO] fetching crate errno-no-std 0.2.2...
[INFO] testing errno-no-std-0.2.2 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate errno-no-std 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate errno-no-std 0.2.2
[INFO] finished tweaking crates.io crate errno-no-std 0.2.2
[INFO] tweaked toml for crates.io crate errno-no-std 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate errno-no-std 0.2.2 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v1.1.0
[INFO] [stderr]   Downloaded errno-sys v0.2.0
[INFO] [stderr]   Downloaded quickcheck_macros v1.2.0
[INFO] [stderr]   Downloaded copy_from_str v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07c438eb89feb5013fa89170ffb311db7bfc9923d4b09b7954a9efe7be492073
[INFO] running `Command { std: "docker" "start" "-a" "07c438eb89feb5013fa89170ffb311db7bfc9923d4b09b7954a9efe7be492073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07c438eb89feb5013fa89170ffb311db7bfc9923d4b09b7954a9efe7be492073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c438eb89feb5013fa89170ffb311db7bfc9923d4b09b7954a9efe7be492073", kill_on_drop: false }`
[INFO] [stdout] 07c438eb89feb5013fa89170ffb311db7bfc9923d4b09b7954a9efe7be492073
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4a2526c79a83043500d9061ff67a098b17be7bc37a96e91a12c250c9b6b0c80
[INFO] running `Command { std: "docker" "start" "-a" "c4a2526c79a83043500d9061ff67a098b17be7bc37a96e91a12c250c9b6b0c80", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.59
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling errno-sys v0.2.0
[INFO] [stderr]    Compiling errno-no-std v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary transmute
[INFO] [stdout]   --> src/posix.rs:74:41
[INFO] [stdout]    |
[INFO] [stdout] 74 |           let iconv_res: isize = unsafe { transmute(iconv(
[INFO] [stdout]    |  _________________________________________^
[INFO] [stdout] 75 | |             c.0,
[INFO] [stdout] 76 | |             (&mut msg_ptr) as *mut _,
[INFO] [stdout] 77 | |             (&mut msg_len) as *mut _,
[INFO] [stdout] 78 | |             (&mut uni_buf_ptr) as *mut _,
[INFO] [stdout] 79 | |             (&mut uni_buf_len) as *mut _
[INFO] [stdout] 80 | |         )) };
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:4:9
[INFO] [stdout]    |
[INFO] [stdout]  4 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unnecessary_transmutes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 74 -         let iconv_res: isize = unsafe { transmute(iconv(
[INFO] [stdout] 74 +         let iconv_res: isize = unsafe { usize::cast_signed(iconv(
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `errno-no-std` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c4a2526c79a83043500d9061ff67a098b17be7bc37a96e91a12c250c9b6b0c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a2526c79a83043500d9061ff67a098b17be7bc37a96e91a12c250c9b6b0c80", kill_on_drop: false }`
[INFO] [stdout] c4a2526c79a83043500d9061ff67a098b17be7bc37a96e91a12c250c9b6b0c80