[INFO] updating cached repository https://github.com/Reignbeaux/tower-of-hanoi
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ece4193ed3347c7a1e224c89267694a4d8394125
[INFO] checking Reignbeaux/tower-of-hanoi against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReignbeaux%2Ftower-of-hanoi" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Reignbeaux/tower-of-hanoi on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Reignbeaux/tower-of-hanoi
[INFO] finished tweaking git repo https://github.com/Reignbeaux/tower-of-hanoi
[INFO] tweaked toml for git repo https://github.com/Reignbeaux/tower-of-hanoi written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Reignbeaux/tower-of-hanoi already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/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[INFO] the lockfile is outdated, regenerating it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 `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fbde7d741d109ad538693b73d243690ccfd7451394dfaa3a752f24795d22717a
[INFO] running `"docker" "start" "-a" "fbde7d741d109ad538693b73d243690ccfd7451394dfaa3a752f24795d22717a"`
[INFO] [stderr]     Checking tower_of_hanoi v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `unstable`
[INFO] [stderr]  --> src/main.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[allow(unstable)]
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unstable`
[INFO] [stderr]  --> src/main.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[allow(unstable)]
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::old_io;
[INFO] [stderr]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::old_io::File;
[INFO] [stderr]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::time::duration`
[INFO] [stderr]  --> src/main.rs:8:16
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::duration::Duration;
[INFO] [stderr]   |                ^^^^^^^^ could not find `duration` in `time`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> src/main.rs:74:31
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut f = File::create(&Path::new("moves"));
[INFO] [stderr]    |                               ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `args` in module `os`
[INFO] [stderr]   --> src/main.rs:33:20
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let args = os::args();
[INFO] [stderr]    |                    ^^^^ not found in `os`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use std::env::args;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:112:38
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut guard1: std::thread::JoinGuard<Vec<(i32, i32)>>;
[INFO] [stderr]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:113:38
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let mut guard2: std::thread::JoinGuard<Vec<(i32, i32)>>; 
[INFO] [stderr]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:147:100
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn start_thread<'a>(height: i32, sequence: (i32, i32, i32), threads_to_start: i32) -> std::thread::JoinGuard<'a, Vec<(i32, i32)>> {
[INFO] [stderr]     |                                                                                                    ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::old_io;
[INFO] [stderr]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::old_io::File;
[INFO] [stderr]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::time::duration`
[INFO] [stderr]  --> src/main.rs:8:16
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::duration::Duration;
[INFO] [stderr]   |                ^^^^^^^^ could not find `duration` in `time`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> src/main.rs:74:31
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut f = File::create(&Path::new("moves"));
[INFO] [stderr]    |                               ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `args` in module `os`
[INFO] [stderr]   --> src/main.rs:33:20
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let args = os::args();
[INFO] [stderr]    |                    ^^^^ not found in `os`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use std::env::args;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:112:38
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut guard1: std::thread::JoinGuard<Vec<(i32, i32)>>;
[INFO] [stderr]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:113:38
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let mut guard2: std::thread::JoinGuard<Vec<(i32, i32)>>; 
[INFO] [stderr]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stderr]    --> src/main.rs:147:100
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn start_thread<'a>(height: i32, sequence: (i32, i32, i32), threads_to_start: i32) -> std::thread::JoinGuard<'a, Vec<(i32, i32)>> {
[INFO] [stderr]     |                                                                                                    ^^^^^^^^^ not found in `std::thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/main.rs:80:38
[INFO] [stderr]    |
[INFO] [stderr] 80 |         f.write_str(from.to_string().as_slice());
[INFO] [stderr]    |                                      ^^^^^^^^ method not found in `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/main.rs:82:36
[INFO] [stderr]    |
[INFO] [stderr] 82 |         f.write_str(to.to_string().as_slice());
[INFO] [stderr]    |                                    ^^^^^^^^ method not found in `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<(i32, i32)>` in the current scope
[INFO] [stderr]    --> src/main.rs:139:15
[INFO] [stderr]     |
[INFO] [stderr] 139 |         moves.push_all(moves1.as_slice());
[INFO] [stderr]     |               ^^^^^^^^ method not found in `std::vec::Vec<(i32, i32)>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<(i32, i32)>` in the current scope
[INFO] [stderr]    --> src/main.rs:141:15
[INFO] [stderr]     |
[INFO] [stderr] 141 |         moves.push_all(moves2.as_slice());
[INFO] [stderr]     |               ^^^^^^^^ method not found in `std::vec::Vec<(i32, i32)>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `scoped` found for struct `std::thread::Thread` in the current scope
[INFO] [stderr]    --> src/main.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |     Thread::scoped(move || {
[INFO] [stderr]     |             ^^^^^^ function or associated item not found in `std::thread::Thread`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0432, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `tower_of_hanoi`.
[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[E0599]: no method named `as_slice` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/main.rs:80:38
[INFO] [stderr]    |
[INFO] [stderr] 80 |         f.write_str(from.to_string().as_slice());
[INFO] [stderr]    |                                      ^^^^^^^^ method not found in `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/main.rs:82:36
[INFO] [stderr]    |
[INFO] [stderr] 82 |         f.write_str(to.to_string().as_slice());
[INFO] [stderr]    |                                    ^^^^^^^^ method not found in `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<(i32, i32)>` in the current scope
[INFO] [stderr]    --> src/main.rs:139:15
[INFO] [stderr]     |
[INFO] [stderr] 139 |         moves.push_all(moves1.as_slice());
[INFO] [stderr]     |               ^^^^^^^^ method not found in `std::vec::Vec<(i32, i32)>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<(i32, i32)>` in the current scope
[INFO] [stderr]    --> src/main.rs:141:15
[INFO] [stderr]     |
[INFO] [stderr] 141 |         moves.push_all(moves2.as_slice());
[INFO] [stderr]     |               ^^^^^^^^ method not found in `std::vec::Vec<(i32, i32)>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `scoped` found for struct `std::thread::Thread` in the current scope
[INFO] [stderr]    --> src/main.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |     Thread::scoped(move || {
[INFO] [stderr]     |             ^^^^^^ function or associated item not found in `std::thread::Thread`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0432, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `tower_of_hanoi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fbde7d741d109ad538693b73d243690ccfd7451394dfaa3a752f24795d22717a"`
[INFO] running `"docker" "rm" "-f" "fbde7d741d109ad538693b73d243690ccfd7451394dfaa3a752f24795d22717a"`
[INFO] [stdout] fbde7d741d109ad538693b73d243690ccfd7451394dfaa3a752f24795d22717a
