[INFO] cloning repository https://github.com/brson/ctrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brson/ctrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fctrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fctrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd0a46bf647f439067f45238f59a445181c8cb6d
[INFO] checking brson/ctrs against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fctrs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brson/ctrs on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brson/ctrs
[INFO] finished tweaking git repo https://github.com/brson/ctrs
[INFO] tweaked toml for git repo https://github.com/brson/ctrs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/brson/ctrs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7682b3891f8b3437b9ad755452967d61f346716e7872efd868a4cdfcc7b87ffa
[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" "7682b3891f8b3437b9ad755452967d61f346716e7872efd868a4cdfcc7b87ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7682b3891f8b3437b9ad755452967d61f346716e7872efd868a4cdfcc7b87ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7682b3891f8b3437b9ad755452967d61f346716e7872efd868a4cdfcc7b87ffa", kill_on_drop: false }`
[INFO] [stdout] 7682b3891f8b3437b9ad755452967d61f346716e7872efd868a4cdfcc7b87ffa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb4b02d6a6569cc3993fbdfba090cf07844e978b87d487914bee14cb56c68cd6
[INFO] running `Command { std: "docker" "start" "-a" "fb4b02d6a6569cc3993fbdfba090cf07844e978b87d487914bee14cb56c68cd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking ctrs-rt v0.1.0 (/opt/rustwide/workdir/src/ctrs-rt)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ctrs-rt/c.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let levels = try!(fs::read_dir(test_dir)).filter_map(|e| {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ctrs-rt/c.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let groups = try!(fs::read_dir(level_dir)).filter_map(|e| {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ctrs-rt/c.rs:88:17
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let tests = try!(fs::read_dir(group_dir)).filter_map(|e| {
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ctrs-rt/c.rs:110:15
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let dir = try!(entry).path();
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ctrs-rt/c.rs:111:15
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let dir = try!(dir.file_name().ok_or_else(|| format!("wut?")));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ctrs-rt/c.rs:112:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let dir = try!(dir.to_str().ok_or_else(|| format!("non-utf8 path: {:?}", dir)));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ctrs-rt/c.rs:118:15
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let dir = try!(dir_to_string(entry));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ctrs-rt/c.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     Ok(try!(Version::parse(&dir)))
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Version: Encodable` is not satisfied
[INFO] [stdout]    --> src/ctrs-rt/c.rs:34:17
[INFO] [stdout]     |
[INFO] [stdout] 34  | #[derive(Debug, RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ the trait `Encodable` is not implemented for `Version`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/serialize.rs:853:15
[INFO] [stdout]     |
[INFO] [stdout] 853 |     fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error>;
[INFO] [stdout]     |               - required by this bound in `rustc_serialize::Encodable::encode`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Version: Decodable` is not satisfied
[INFO] [stdout]    --> src/ctrs-rt/c.rs:36:5
[INFO] [stdout]     |
[INFO] [stdout] 36  |     name: Version,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the trait `Decodable` is not implemented for `Version`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/serialize.rs:902:1
[INFO] [stdout]     |
[INFO] [stdout] 902 | pub trait Decodable: Sized {
[INFO] [stdout]     | -------------------------- required by this bound in `Decodable`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Version: Decodable` is not satisfied
[INFO] [stdout]    --> src/ctrs-rt/c.rs:34:33
[INFO] [stdout]     |
[INFO] [stdout] 34  | #[derive(Debug, RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^ the trait `Decodable` is not implemented for `Version`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/serialize.rs:904:18
[INFO] [stdout]     |
[INFO] [stdout] 904 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error>;
[INFO] [stdout]     |                  ------- required by this bound in `rustc_serialize::Decodable::decode`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]   --> src/ctrs-rt/c.rs:55:33
[INFO] [stdout]    |
[INFO] [stdout] 55 | #[derive(Debug, RustcEncodable, RustcDecodable)]
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 unreachable call
[INFO] [stdout]    |                                 any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/ctrs-rt/c.rs:157:40
[INFO] [stdout]     |
[INFO] [stdout] 157 |             Error::IoError(ref e) => e.description(),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/ctrs-rt/c.rs:159:44
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Error::SemverError(ref e) => e.description(),
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ctrs-rt`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fb4b02d6a6569cc3993fbdfba090cf07844e978b87d487914bee14cb56c68cd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4b02d6a6569cc3993fbdfba090cf07844e978b87d487914bee14cb56c68cd6", kill_on_drop: false }`
[INFO] [stdout] fb4b02d6a6569cc3993fbdfba090cf07844e978b87d487914bee14cb56c68cd6