[INFO] cloning repository https://github.com/sor-ca/tftp_embedded_nal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sor-ca/tftp_embedded_nal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsor-ca%2Ftftp_embedded_nal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsor-ca%2Ftftp_embedded_nal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6cd130bae560986cf8bcc0164af4b5881083217
[INFO] checking sor-ca/tftp_embedded_nal against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsor-ca%2Ftftp_embedded_nal" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sor-ca/tftp_embedded_nal on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sor-ca/tftp_embedded_nal
[INFO] finished tweaking git repo https://github.com/sor-ca/tftp_embedded_nal
[INFO] tweaked toml for git repo https://github.com/sor-ca/tftp_embedded_nal written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sor-ca/tftp_embedded_nal 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages
[INFO] [stderr]       Adding atomic-polyfill v1.0.3
[INFO] [stderr]       Adding autocfg v1.2.0
[INFO] [stderr]       Adding byteorder v1.5.0
[INFO] [stderr]       Adding critical-section v1.1.2
[INFO] [stderr]       Adding embedded-nal v0.6.0 (latest: v0.8.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (latest: v0.8.0)
[INFO] [stderr]       Adding lock_api v0.4.11
[INFO] [stderr]       Adding no-std-net v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding rustc_version v0.4.0
[INFO] [stderr]       Adding scopeguard v1.2.0
[INFO] [stderr]       Adding semver v1.0.22
[INFO] [stderr]       Adding spin v0.9.8
[INFO] [stderr]       Adding stable_deref_trait v1.2.0
[INFO] [stderr]       Adding std-embedded-nal v0.1.3 (latest: v0.2.0)
[INFO] [stderr]       Adding tftp_embedded_nal v0.1.0 (/workspace/builds/worker-0-tc1/source/tftp_embedded_nal)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embedded-nal v0.6.0
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] [stderr]   Downloaded enumn v0.1.5
[INFO] [stderr]   Downloaded std-embedded-nal v0.1.3
[INFO] [stderr]   Downloaded tftp v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4caff85df8b206324cc8c016620e94ae15779af28a1efaf3379ccc3eb1258962
[INFO] running `Command { std: "docker" "start" "-a" "4caff85df8b206324cc8c016620e94ae15779af28a1efaf3379ccc3eb1258962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4caff85df8b206324cc8c016620e94ae15779af28a1efaf3379ccc3eb1258962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4caff85df8b206324cc8c016620e94ae15779af28a1efaf3379ccc3eb1258962", kill_on_drop: false }`
[INFO] [stdout] 4caff85df8b206324cc8c016620e94ae15779af28a1efaf3379ccc3eb1258962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbaf3582cf52555ef42a2c3f05bbf2f26187019f1c02aa16a35bd7ac03d9c148
[INFO] running `Command { std: "docker" "start" "-a" "cbaf3582cf52555ef42a2c3f05bbf2f26187019f1c02aa16a35bd7ac03d9c148", 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 semver v1.0.22
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking no-std-net v0.5.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking embedded-nal v0.6.0
[INFO] [stderr]     Checking std-embedded-nal v0.1.3
[INFO] [stderr]    Compiling enumn v0.1.5
[INFO] [stderr]    Compiling displaydoc v0.2.3
[INFO] [stderr]     Checking tftp v0.1.0
[INFO] [stderr]     Checking tftp_embedded_nal v0.1.0 (/opt/rustwide/workdir/tftp_embedded_nal)
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> tftp_embedded_nal/src/message.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use embedded_nal::nb;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ the item `nb` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> tftp_embedded_nal/src/client.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use nb;
[INFO] [stdout]    |         ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsciiStr`
[INFO] [stdout]  --> tftp_embedded_nal/src/server.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ascii::{AsciiStr, AsciiString};
[INFO] [stdout]   |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]  --> tftp_embedded_nal/src/server.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nb;
[INFO] [stdout]   |     ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> tftp_embedded_nal/src/message.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use embedded_nal::nb;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ the item `nb` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> tftp_embedded_nal/src/client.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use nb;
[INFO] [stdout]    |         ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsciiStr`
[INFO] [stdout]  --> tftp_embedded_nal/src/server.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ascii::{AsciiStr, AsciiString};
[INFO] [stdout]   |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]  --> tftp_embedded_nal/src/server.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nb;
[INFO] [stdout]   |     ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `filename` is never read
[INFO] [stdout]   --> tftp_embedded_nal/src/server.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut filename = AsciiString::new();
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error` is never used
[INFO] [stdout]    --> tftp_embedded_nal/src/message.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn error<'b>(block_id: u16, error_message: &'b AsciiStr) -> Message<'b> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `filename` is never read
[INFO] [stdout]   --> tftp_embedded_nal/src/server.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut filename = AsciiString::new();
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error` is never used
[INFO] [stdout]    --> tftp_embedded_nal/src/message.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn error<'b>(block_id: u16, error_message: &'b AsciiStr) -> Message<'b> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "cbaf3582cf52555ef42a2c3f05bbf2f26187019f1c02aa16a35bd7ac03d9c148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbaf3582cf52555ef42a2c3f05bbf2f26187019f1c02aa16a35bd7ac03d9c148", kill_on_drop: false }`
[INFO] [stdout] cbaf3582cf52555ef42a2c3f05bbf2f26187019f1c02aa16a35bd7ac03d9c148