[INFO] cloning repository https://github.com/llamicron/lab_grader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/llamicron/lab_grader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllamicron%2Flab_grader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllamicron%2Flab_grader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6ed054bca8d3f20efc7ed995e23197ee089e6eb
[INFO] checking llamicron/lab_grader against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllamicron%2Flab_grader" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/llamicron/lab_grader on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/llamicron/lab_grader
[INFO] finished tweaking git repo https://github.com/llamicron/lab_grader
[INFO] tweaked toml for git repo https://github.com/llamicron/lab_grader written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 270 packages to latest compatible versions
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (available: v1.4.1)
[INFO] [stderr]       Adding reqwest v0.10.10 (available: v0.12.20)
[INFO] [stderr]       Adding rocket v0.4.11 (available: v0.5.1)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] [stderr]       Adding subtle v2.4.1 (available: v2.6.1)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded traitobject v0.1.1
[INFO] [stderr]   Downloaded rocket_contrib v0.4.11
[INFO] [stderr]   Downloaded devise v0.2.1
[INFO] [stderr]   Downloaded devise_codegen v0.2.1
[INFO] [stderr]   Downloaded pear_codegen v0.1.5
[INFO] [stderr]   Downloaded pear v0.1.5
[INFO] [stderr]   Downloaded paris v1.5.15
[INFO] [stderr]   Downloaded rocket_codegen v0.4.11
[INFO] [stderr]   Downloaded pretty_assertions v0.6.1
[INFO] [stderr]   Downloaded cookie v0.11.5
[INFO] [stderr]   Downloaded rocket_http v0.4.11
[INFO] [stderr]   Downloaded notify v4.0.18
[INFO] [stderr]   Downloaded rocket v0.4.11
[INFO] [stderr]   Downloaded devise_core v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6903e3b846a872d99d4e65b753d96e0f114b6189f01fd8841dbe60ab26350e9
[INFO] running `Command { std: "docker" "start" "-a" "b6903e3b846a872d99d4e65b753d96e0f114b6189f01fd8841dbe60ab26350e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6903e3b846a872d99d4e65b753d96e0f114b6189f01fd8841dbe60ab26350e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6903e3b846a872d99d4e65b753d96e0f114b6189f01fd8841dbe60ab26350e9", kill_on_drop: false }`
[INFO] [stdout] b6903e3b846a872d99d4e65b753d96e0f114b6189f01fd8841dbe60ab26350e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a74566740431d6b270c77cf76b5c3789faf2593fd0056a8077fb48adf555e0ea
[INFO] running `Command { std: "docker" "start" "-a" "a74566740431d6b270c77cf76b5c3789faf2593fd0056a8077fb48adf555e0ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling opaque-debug v0.3.1
[INFO] [stderr]    Compiling cc v1.2.26
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling pear_codegen v0.1.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling tinyvec v1.9.0
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling cpuid-bool v0.2.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling unicode-bidi v0.3.18
[INFO] [stderr]    Compiling icu_properties_data v2.0.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]     Checking unicode-normalization v0.1.24
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[INFO] [stderr]    Compiling cipher v0.2.5
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling polyval v0.4.5
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking net2 v0.2.39
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[INFO] [stderr]    Compiling aes-soft v0.6.4
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[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling aes-gcm v0.8.0
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]    Compiling hkdf v0.10.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling idna v0.1.5
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[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling traitobject v0.1.1
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling rocket_codegen v0.4.11
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]    Compiling state v0.4.2
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling rocket v0.4.11
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking filetime v0.2.25
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking cookie v0.11.5
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking ipnet v2.11.0
[INFO] [stderr]     Checking notify v4.0.18
[INFO] [stderr]     Checking paris v1.5.15
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling devise_core v0.2.1
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling devise_codegen v0.2.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling devise v0.2.1
[INFO] [stderr]    Compiling pear v0.1.5
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking rocket_http v0.4.11
[INFO] [stdout] error[E0520]: `to_string` specializes an item from a parent `impl`, but that item is not marked `default`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rocket_http-0.4.11/src/raw_str.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 |     fn to_string(&self) -> String {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: parent implementation is in crate `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stdout] error[E0520]: `to_string` specializes an item from a parent `impl`, but that item is not marked `default`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rocket_http-0.4.11/src/raw_str.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 |     fn to_string(&self) -> String {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: parent implementation is in crate `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0520`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket_http` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0520`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket_http` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a74566740431d6b270c77cf76b5c3789faf2593fd0056a8077fb48adf555e0ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a74566740431d6b270c77cf76b5c3789faf2593fd0056a8077fb48adf555e0ea", kill_on_drop: false }`
[INFO] [stdout] a74566740431d6b270c77cf76b5c3789faf2593fd0056a8077fb48adf555e0ea