[INFO] cloning repository https://github.com/Reignbeaux/tower-of-hanoi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Reignbeaux/tower-of-hanoi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReignbeaux%2Ftower-of-hanoi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReignbeaux%2Ftower-of-hanoi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ece4193ed3347c7a1e224c89267694a4d8394125
[INFO] checking Reignbeaux/tower-of-hanoi against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReignbeaux%2Ftower-of-hanoi" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Reignbeaux/tower-of-hanoi on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/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[INFO] the lockfile is outdated, regenerating it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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f09739cde105a6b0ac32cd8183c83bea84ae28be6c71b91ce8608bda4c9f2e9
[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" "0f09739cde105a6b0ac32cd8183c83bea84ae28be6c71b91ce8608bda4c9f2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f09739cde105a6b0ac32cd8183c83bea84ae28be6c71b91ce8608bda4c9f2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f09739cde105a6b0ac32cd8183c83bea84ae28be6c71b91ce8608bda4c9f2e9", kill_on_drop: false }`
[INFO] [stdout] 0f09739cde105a6b0ac32cd8183c83bea84ae28be6c71b91ce8608bda4c9f2e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06a3c01729ccb8c62d3e25bbd0fe9a463cacc1bdd9dba94cf4340104916e6260
[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" "06a3c01729ccb8c62d3e25bbd0fe9a463cacc1bdd9dba94cf4340104916e6260", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tower_of_hanoi v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `unstable`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[allow(unstable)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unstable`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[allow(unstable)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::old_io;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::old_io::File;
[INFO] [stdout]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::time::duration`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::duration::Duration;
[INFO] [stdout]   |                ^^^^^^^^ could not find `duration` in `time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::num::Float`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::old_io;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::old_io::File;
[INFO] [stdout]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::time::duration`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::duration::Duration;
[INFO] [stdout]   |                ^^^^^^^^ could not find `duration` in `time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::num::Float`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `args` in module `os`
[INFO] [stdout]   --> src/main.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let args = os::args();
[INFO] [stdout]    |                    ^^^^ not found in `os`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 4  | use std::env::args;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stdout]   --> src/main.rs:74:31
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let mut f = File::create(&Path::new("moves"));
[INFO] [stdout]    |                               ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  | use std::path::Path;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:112:38
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut guard1: std::thread::JoinGuard<Vec<(i32, i32)>>;
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:113:38
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut guard2: std::thread::JoinGuard<Vec<(i32, i32)>>; 
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:147:100
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn start_thread<'a>(height: i32, sequence: (i32, i32, i32), threads_to_start: i32) -> std::thread::JoinGuard<'a, Vec<(i32, i32)>> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `args` in module `os`
[INFO] [stdout]   --> src/main.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let args = os::args();
[INFO] [stdout]    |                    ^^^^ not found in `os`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 4  | use std::env::args;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stdout]   --> src/main.rs:74:31
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let mut f = File::create(&Path::new("moves"));
[INFO] [stdout]    |                               ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  | use std::path::Path;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:112:38
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut guard1: std::thread::JoinGuard<Vec<(i32, i32)>>;
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:113:38
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut guard2: std::thread::JoinGuard<Vec<(i32, i32)>>; 
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `std::thread`
[INFO] [stdout]    --> src/main.rs:147:100
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn start_thread<'a>(height: i32, sequence: (i32, i32, i32), threads_to_start: i32) -> std::thread::JoinGuard<'a, Vec<(i32, i32)>> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/main.rs:80:38
[INFO] [stdout]    |
[INFO] [stdout] 80 |         f.write_str(from.to_string().as_slice());
[INFO] [stdout]    |                                      ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/main.rs:80:38
[INFO] [stdout]    |
[INFO] [stdout] 80 |         f.write_str(from.to_string().as_slice());
[INFO] [stdout]    |                                      ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/main.rs:82:36
[INFO] [stdout]    |
[INFO] [stdout] 82 |         f.write_str(to.to_string().as_slice());
[INFO] [stdout]    |                                    ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/main.rs:82:36
[INFO] [stdout]    |
[INFO] [stdout] 82 |         f.write_str(to.to_string().as_slice());
[INFO] [stdout]    |                                    ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `push_all` found for struct `Vec<(i32, i32)>` in the current scope
[INFO] [stdout]    --> src/main.rs:139:15
[INFO] [stdout]     |
[INFO] [stdout] 139 |         moves.push_all(moves1.as_slice());
[INFO] [stdout]     |               ^^^^^^^^ method not found in `Vec<(i32, i32)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `push_all` found for struct `Vec<(i32, i32)>` in the current scope
[INFO] [stdout]    --> src/main.rs:139:15
[INFO] [stdout]     |
[INFO] [stdout] 139 |         moves.push_all(moves1.as_slice());
[INFO] [stdout]     |               ^^^^^^^^ method not found in `Vec<(i32, i32)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `push_all` found for struct `Vec<(i32, i32)>` in the current scope
[INFO] [stdout]    --> src/main.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 141 |         moves.push_all(moves2.as_slice());
[INFO] [stdout]     |               ^^^^^^^^ method not found in `Vec<(i32, i32)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `push_all` found for struct `Vec<(i32, i32)>` in the current scope
[INFO] [stdout]    --> src/main.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 141 |         moves.push_all(moves2.as_slice());
[INFO] [stdout]     |               ^^^^^^^^ method not found in `Vec<(i32, i32)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `scoped` found for struct `Thread` in the current scope
[INFO] [stdout]    --> src/main.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |     Thread::scoped(move || {
[INFO] [stdout]     |             ^^^^^^ function or associated item not found in `Thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `scoped` found for struct `Thread` in the current scope
[INFO] [stdout]    --> src/main.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |     Thread::scoped(move || {
[INFO] [stdout]     |             ^^^^^^ function or associated item not found in `Thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tower_of_hanoi`.
[INFO] [stdout] error: aborting due to 14 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 14 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] Some errors have detailed explanations: E0412, E0425, E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0425, E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "06a3c01729ccb8c62d3e25bbd0fe9a463cacc1bdd9dba94cf4340104916e6260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a3c01729ccb8c62d3e25bbd0fe9a463cacc1bdd9dba94cf4340104916e6260", kill_on_drop: false }`
[INFO] [stdout] 06a3c01729ccb8c62d3e25bbd0fe9a463cacc1bdd9dba94cf4340104916e6260
