[INFO] fetching crate ImtiazGermain 0.1.2...
[INFO] checking ImtiazGermain-0.1.2 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate ImtiazGermain 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ImtiazGermain 0.1.2 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ImtiazGermain 0.1.2
[INFO] finished tweaking crates.io crate ImtiazGermain 0.1.2
[INFO] tweaked toml for crates.io crate ImtiazGermain 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95a25b737e508e279971d231693010477a2f2057874c13dc5e0e11e03892a9d0
[INFO] running `Command { std: "docker" "start" "-a" "95a25b737e508e279971d231693010477a2f2057874c13dc5e0e11e03892a9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95a25b737e508e279971d231693010477a2f2057874c13dc5e0e11e03892a9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a25b737e508e279971d231693010477a2f2057874c13dc5e0e11e03892a9d0", kill_on_drop: false }`
[INFO] [stdout] 95a25b737e508e279971d231693010477a2f2057874c13dc5e0e11e03892a9d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aacdbcbe88287ea2179c56fc5a612a89e1b0aaea6f5095a27e584b1306f2c025
[INFO] running `Command { std: "docker" "start" "-a" "aacdbcbe88287ea2179c56fc5a612a89e1b0aaea6f5095a27e584b1306f2c025", kill_on_drop: false }`
[INFO] [stderr]     Checking ImtiazGermain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `read_to_string` found for struct `ChildStdout` in the current scope
[INFO] [stdout]   --> tests/integration_tests.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 22 |     child.stdout.take().unwrap().read_to_string(&mut output).unwrap();
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/io/mod.rs:918:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `ChildStdout` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Read` which provides `read_to_string` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::io::Read;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `read_to_end` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 22 |     child.stdout.take().unwrap().read_to_end(&mut output).unwrap();
[INFO] [stdout]    |                                  ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ImtiazGermain` (test "integration_tests") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "aacdbcbe88287ea2179c56fc5a612a89e1b0aaea6f5095a27e584b1306f2c025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aacdbcbe88287ea2179c56fc5a612a89e1b0aaea6f5095a27e584b1306f2c025", kill_on_drop: false }`
[INFO] [stdout] aacdbcbe88287ea2179c56fc5a612a89e1b0aaea6f5095a27e584b1306f2c025