[INFO] cloning repository https://github.com/Diegovsky/fakewrite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Diegovsky/fakewrite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiegovsky%2Ffakewrite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiegovsky%2Ffakewrite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 506781a04b051a9579878467cecd0a1360f85919
[INFO] checking Diegovsky/fakewrite against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiegovsky%2Ffakewrite" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Diegovsky/fakewrite on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Diegovsky/fakewrite
[INFO] finished tweaking git repo https://github.com/Diegovsky/fakewrite
[INFO] tweaked toml for git repo https://github.com/Diegovsky/fakewrite written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Diegovsky/fakewrite already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7d31767f4dbb4cfee65b756c1c09395930e9103b2ad2de331f621d0699d278
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "de7d31767f4dbb4cfee65b756c1c09395930e9103b2ad2de331f621d0699d278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7d31767f4dbb4cfee65b756c1c09395930e9103b2ad2de331f621d0699d278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7d31767f4dbb4cfee65b756c1c09395930e9103b2ad2de331f621d0699d278", kill_on_drop: false }`
[INFO] [stdout] de7d31767f4dbb4cfee65b756c1c09395930e9103b2ad2de331f621d0699d278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfb1919b0ab900427e6db5d3267d1aed719d6c3a3f86f313b51c2b4d5ba517e2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dfb1919b0ab900427e6db5d3267d1aed719d6c3a3f86f313b51c2b4d5ba517e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking fakewrite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process_exitcode_placeholder)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CString`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ffi::{CStr, CString};
[INFO] [stdout]   |                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `utils::SimpleError`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use utils::SimpleError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process_exitcode_placeholder)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CString`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ffi::{CStr, CString};
[INFO] [stdout]   |                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `utils::SimpleError`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use utils::SimpleError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `std::string::String: std::convert::From<std::ffi::OsString>` is not satisfied
[INFO] [stdout]   --> src/main.rs:28:22
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Some(val) => String::from(val),
[INFO] [stdout]    |                      ^^^^^^^^^^^^ the trait `std::convert::From<std::ffi::OsString>` is not implemented for `std::string::String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following implementations were found:
[INFO] [stdout]              <std::string::String as std::convert::From<&mut str>>
[INFO] [stdout]              <std::string::String as std::convert::From<&std::string::String>>
[INFO] [stdout]              <std::string::String as std::convert::From<&str>>
[INFO] [stdout]              <std::string::String as std::convert::From<char>>
[INFO] [stdout]            and 2 others
[INFO] [stdout]    = note: required by `std::convert::From::from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |         ^^^^^ -------------- supplied 1 argument
[INFO] [stdout]    |         |
[INFO] [stdout]    |         expected 2 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[i8]` cannot be known at compilation time
[INFO] [stdout]   --> src/main.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |               ^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = help: within `std::ffi::CStr`, the trait `std::marker::Sized` is not implemented for `[i8]`
[INFO] [stdout]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout]    = note: required because it appears within the type `std::ffi::CStr`
[INFO] [stdout]    = note: required by `std::convert::From::from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |                          ^^ expected struct `std::ffi::CStr`, found `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `std::string::String: std::convert::From<std::ffi::OsString>` is not satisfied
[INFO] [stdout]   --> src/main.rs:28:22
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Some(val) => String::from(val),
[INFO] [stdout]    |                      ^^^^^^^^^^^^ the trait `std::convert::From<std::ffi::OsString>` is not implemented for `std::string::String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following implementations were found:
[INFO] [stdout]              <std::string::String as std::convert::From<&mut str>>
[INFO] [stdout]              <std::string::String as std::convert::From<&std::string::String>>
[INFO] [stdout]              <std::string::String as std::convert::From<&str>>
[INFO] [stdout]              <std::string::String as std::convert::From<char>>
[INFO] [stdout]            and 2 others
[INFO] [stdout]    = note: required by `std::convert::From::from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |         ^^^^^ -------------- supplied 1 argument
[INFO] [stdout]    |         |
[INFO] [stdout]    |         expected 2 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[i8]` cannot be known at compilation time
[INFO] [stdout]   --> src/main.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |               ^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = help: within `std::ffi::CStr`, the trait `std::marker::Sized` is not implemented for `[i8]`
[INFO] [stdout]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout]    = note: required because it appears within the type `std::ffi::CStr`
[INFO] [stdout]    = note: required by `std::convert::From::from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stdout]    |         |
[INFO] [stdout]    |         expected `()`, found enum `std::result::Result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `std::result::Result<void::Void, nix::Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     loop {
[INFO] [stdout] 32 | |         execv(CStr::from(""))
[INFO] [stdout] 33 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 34 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |                          ^^ expected struct `std::ffi::CStr`, found `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0277, E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fakewrite`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         execv(CStr::from(""))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stdout]    |         |
[INFO] [stdout]    |         expected `()`, found enum `std::result::Result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `std::result::Result<void::Void, nix::Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     loop {
[INFO] [stdout] 32 | |         execv(CStr::from(""))
[INFO] [stdout] 33 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 34 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0277, E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dfb1919b0ab900427e6db5d3267d1aed719d6c3a3f86f313b51c2b4d5ba517e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfb1919b0ab900427e6db5d3267d1aed719d6c3a3f86f313b51c2b4d5ba517e2", kill_on_drop: false }`
[INFO] [stdout] dfb1919b0ab900427e6db5d3267d1aed719d6c3a3f86f313b51c2b4d5ba517e2
