[INFO] cloning repository https://github.com/matthewashton-k/Lecture-4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthewashton-k/Lecture-4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2FLecture-4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2FLecture-4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41bedbb4bc0679dd7b8f0c3cb5bb8749b7080c62
[INFO] testing matthewashton-k/Lecture-4 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2FLecture-4" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/matthewashton-k/Lecture-4
[INFO] finished tweaking git repo https://github.com/matthewashton-k/Lecture-4
[INFO] tweaked toml for git repo https://github.com/matthewashton-k/Lecture-4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/matthewashton-k/Lecture-4 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/matthewashton-k/Lecture-4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f78291bbf91b6569d7f45610349b2bf5f8665ec78ccd957e1050fb41675ac42b
[INFO] running `Command { std: "docker" "start" "-a" "f78291bbf91b6569d7f45610349b2bf5f8665ec78ccd957e1050fb41675ac42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f78291bbf91b6569d7f45610349b2bf5f8665ec78ccd957e1050fb41675ac42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f78291bbf91b6569d7f45610349b2bf5f8665ec78ccd957e1050fb41675ac42b", kill_on_drop: false }`
[INFO] [stdout] f78291bbf91b6569d7f45610349b2bf5f8665ec78ccd957e1050fb41675ac42b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6129c774461b2d01bdd43c94ab67d7ea55d3f87f7f84b10fb49c09f45b37482
[INFO] running `Command { std: "docker" "start" "-a" "d6129c774461b2d01bdd43c94ab67d7ea55d3f87f7f84b10fb49c09f45b37482", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling encoder v0.1.0 (/opt/rustwide/workdir/encoder)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> encoder/src/encryption.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut keystream = KeyStream::new(key);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling payload_generator v0.1.0 (/opt/rustwide/workdir/payload_generator)
[INFO] [stderr]    Compiling payload_executor v0.1.0 (/opt/rustwide/workdir/payload_executor)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]  --> payload_generator/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe {
[INFO] [stdout]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]  --> payload_executor/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe {
[INFO] [stdout]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> payload_generator/src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         std::fs::write("../payload.bin", payload_bytes);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let _ = std::fs::write("../payload.bin", payload_bytes);
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "d6129c774461b2d01bdd43c94ab67d7ea55d3f87f7f84b10fb49c09f45b37482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6129c774461b2d01bdd43c94ab67d7ea55d3f87f7f84b10fb49c09f45b37482", kill_on_drop: false }`
[INFO] [stdout] d6129c774461b2d01bdd43c94ab67d7ea55d3f87f7f84b10fb49c09f45b37482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 561dd35522ce46088a67a83b20d90c4c1007607c75a5aba7efdc2554c329c5f7
[INFO] running `Command { std: "docker" "start" "-a" "561dd35522ce46088a67a83b20d90c4c1007607c75a5aba7efdc2554c329c5f7", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling payload_executor v0.1.0 (/opt/rustwide/workdir/payload_executor)
[INFO] [stderr]    Compiling payload_generator v0.1.0 (/opt/rustwide/workdir/payload_generator)
[INFO] [stderr]    Compiling encoder v0.1.0 (/opt/rustwide/workdir/encoder)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> encoder/src/encryption.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut keystream = KeyStream::new(key);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]  --> payload_executor/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe {
[INFO] [stdout]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]  --> payload_generator/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe {
[INFO] [stdout]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> payload_generator/src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         std::fs::write("../payload.bin", payload_bytes);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let _ = std::fs::write("../payload.bin", payload_bytes);
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> encoder/src/encryption.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut keystream = KeyStream::new(key);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "561dd35522ce46088a67a83b20d90c4c1007607c75a5aba7efdc2554c329c5f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "561dd35522ce46088a67a83b20d90c4c1007607c75a5aba7efdc2554c329c5f7", kill_on_drop: false }`
[INFO] [stdout] 561dd35522ce46088a67a83b20d90c4c1007607c75a5aba7efdc2554c329c5f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2dc6b2faa1b3c0e02bc4fb9d84106e68892fee501a26ccb49a35e8f571ec3b0
[INFO] running `Command { std: "docker" "start" "-a" "d2dc6b2faa1b3c0e02bc4fb9d84106e68892fee501a26ccb49a35e8f571ec3b0", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> encoder/src/encryption.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let mut keystream = KeyStream::new(key);
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `encoder` (lib) generated 1 warning (run `cargo fix --lib -p encoder` to apply 1 suggestion)
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]  --> payload_generator/src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     unsafe {
[INFO] [stderr]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> payload_generator/src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         std::fs::write("../payload.bin", payload_bytes);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let _ = std::fs::write("../payload.bin", payload_bytes);
[INFO] [stderr]   |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]  --> payload_executor/src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     unsafe {
[INFO] [stderr]   |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `payload_generator` (bin "payload_generator" test) generated 2 warnings
[INFO] [stderr] warning: `payload_executor` (bin "payload_executor" test) generated 1 warning
[INFO] [stderr] warning: `encoder` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/encoder-9d024796424b914d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_infinit_iterato ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/payload_executor-6a83e8177dbde180)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/payload_generator-df0cd47fcf44cb3e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests encoder
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d2dc6b2faa1b3c0e02bc4fb9d84106e68892fee501a26ccb49a35e8f571ec3b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2dc6b2faa1b3c0e02bc4fb9d84106e68892fee501a26ccb49a35e8f571ec3b0", kill_on_drop: false }`
[INFO] [stdout] d2dc6b2faa1b3c0e02bc4fb9d84106e68892fee501a26ccb49a35e8f571ec3b0
