[INFO] cloning repository https://github.com/kdeberk/myrtle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdeberk/myrtle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdeberk%2Fmyrtle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdeberk%2Fmyrtle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70562a3e15a9fbdf1f3380f7b9e63de2ff7904e7
[INFO] checking kdeberk/myrtle against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdeberk%2Fmyrtle" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kdeberk/myrtle 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/kdeberk/myrtle
[INFO] finished tweaking git repo https://github.com/kdeberk/myrtle
[INFO] tweaked toml for git repo https://github.com/kdeberk/myrtle written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kdeberk/myrtle 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rustyline-derive v0.4.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.20
[INFO] [stderr]   Downloaded rustyline v8.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b9f26b2cf03e96ca2dc9d620156d466d5413d6ea58ae430ab639adcb11d67044
[INFO] running `Command { std: "docker" "start" "-a" "b9f26b2cf03e96ca2dc9d620156d466d5413d6ea58ae430ab639adcb11d67044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9f26b2cf03e96ca2dc9d620156d466d5413d6ea58ae430ab639adcb11d67044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f26b2cf03e96ca2dc9d620156d466d5413d6ea58ae430ab639adcb11d67044", kill_on_drop: false }`
[INFO] [stdout] b9f26b2cf03e96ca2dc9d620156d466d5413d6ea58ae430ab639adcb11d67044
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3a74dcdb345287ab44e7faf4e248920673dd8b67e1d350e505ed64d3316227d4
[INFO] running `Command { std: "docker" "start" "-a" "3a74dcdb345287ab44e7faf4e248920673dd8b67e1d350e505ed64d3316227d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling rustyline-derive v0.4.0
[INFO] [stderr]    Compiling serde_yaml v0.8.20
[INFO] [stderr]     Checking rustyline v8.0.0
[INFO] [stderr]    Compiling myrtle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `glob` is imported redundantly
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use glob;
[INFO] [stdout]   |     ^^^^ the item `glob` 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 `regex` is imported redundantly
[INFO] [stdout]  --> build.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex;
[INFO] [stdout]   |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/scope.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Scope {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Scope` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/builtin.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         name.clone(),
[INFO] [stdout]     |             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/scope.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Scope {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Scope` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/builtin.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         name.clone(),
[INFO] [stdout]     |             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.47s
[INFO] running `Command { std: "docker" "inspect" "3a74dcdb345287ab44e7faf4e248920673dd8b67e1d350e505ed64d3316227d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a74dcdb345287ab44e7faf4e248920673dd8b67e1d350e505ed64d3316227d4", kill_on_drop: false }`
[INFO] [stdout] 3a74dcdb345287ab44e7faf4e248920673dd8b67e1d350e505ed64d3316227d4
[INFO] checking kdeberk/myrtle against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdeberk%2Fmyrtle" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kdeberk/myrtle on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kdeberk/myrtle
[INFO] finished tweaking git repo https://github.com/kdeberk/myrtle
[INFO] tweaked toml for git repo https://github.com/kdeberk/myrtle written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kdeberk/myrtle 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] baacd57f1f40256a0c4720530334ac67ac19b55262d9ef9cdb3bed0090a81df1
[INFO] running `Command { std: "docker" "start" "-a" "baacd57f1f40256a0c4720530334ac67ac19b55262d9ef9cdb3bed0090a81df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baacd57f1f40256a0c4720530334ac67ac19b55262d9ef9cdb3bed0090a81df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baacd57f1f40256a0c4720530334ac67ac19b55262d9ef9cdb3bed0090a81df1", kill_on_drop: false }`
[INFO] [stdout] baacd57f1f40256a0c4720530334ac67ac19b55262d9ef9cdb3bed0090a81df1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adb3c651ffdaab20915363f2179012c550a69967d320594d7c40838c96d51798
[INFO] running `Command { std: "docker" "start" "-a" "adb3c651ffdaab20915363f2179012c550a69967d320594d7c40838c96d51798", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling serde_yaml v0.8.20
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling rustyline-derive v0.4.0
[INFO] [stderr]     Checking rustyline v8.0.0
[INFO] [stderr]    Compiling myrtle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `glob` is imported redundantly
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use glob;
[INFO] [stdout]   |     ^^^^ the item `glob` 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 `regex` is imported redundantly
[INFO] [stdout]  --> build.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex;
[INFO] [stdout]   |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/scope.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Scope {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Scope` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/builtin.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         name.clone(),
[INFO] [stdout]     |             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/scope.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Scope {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Scope` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/builtin.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         name.clone(),
[INFO] [stdout]     |             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.30s
[INFO] running `Command { std: "docker" "inspect" "adb3c651ffdaab20915363f2179012c550a69967d320594d7c40838c96d51798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb3c651ffdaab20915363f2179012c550a69967d320594d7c40838c96d51798", kill_on_drop: false }`
[INFO] [stdout] adb3c651ffdaab20915363f2179012c550a69967d320594d7c40838c96d51798