[INFO] fetching crate ctrem 0.1.4...
[INFO] checking ctrem-0.1.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ctrem 0.1.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate ctrem 0.1.4 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 crates.io crate ctrem 0.1.4
[INFO] finished tweaking crates.io crate ctrem 0.1.4
[INFO] tweaked toml for crates.io crate ctrem 0.1.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate ctrem 0.1.4 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c83af74a4e54191cc379f4f7b68f0212b2c005878072a2ced27fd45f476164e3
[INFO] running `Command { std: "docker" "start" "-a" "c83af74a4e54191cc379f4f7b68f0212b2c005878072a2ced27fd45f476164e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c83af74a4e54191cc379f4f7b68f0212b2c005878072a2ced27fd45f476164e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83af74a4e54191cc379f4f7b68f0212b2c005878072a2ced27fd45f476164e3", kill_on_drop: false }`
[INFO] [stdout] c83af74a4e54191cc379f4f7b68f0212b2c005878072a2ced27fd45f476164e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2becb12479d0183424cd95ee5461073035f4469f479a2e2642c9f6d7aeb53117
[INFO] running `Command { std: "docker" "start" "-a" "2becb12479d0183424cd95ee5461073035f4469f479a2e2642c9f6d7aeb53117", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking ctrem v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `cformat`
[INFO] [stdout]    --> src/lib.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 | macro_rules! cformat {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprint`
[INFO] [stdout]    --> src/lib.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 | macro_rules! cprint {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprintln`
[INFO] [stdout]    --> src/lib.rs:178:14
[INFO] [stdout]     |
[INFO] [stdout] 178 | macro_rules! cprintln {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cformat`
[INFO] [stdout]    --> src/lib.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 | macro_rules! cformat {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprint`
[INFO] [stdout]    --> src/lib.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 | macro_rules! cprint {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprintln`
[INFO] [stdout]    --> src/lib.rs:178:14
[INFO] [stdout]     |
[INFO] [stdout] 178 | macro_rules! cprintln {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprint` is never used
[INFO] [stdout]    --> src/lib.rs:288:8
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn cprint(val: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprintln` is never used
[INFO] [stdout]    --> src/lib.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn cprintln(val: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprint` is never used
[INFO] [stdout]    --> src/lib.rs:288:8
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn cprint(val: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprintln` is never used
[INFO] [stdout]    --> src/lib.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn cprintln(val: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `Command { std: "docker" "inspect" "2becb12479d0183424cd95ee5461073035f4469f479a2e2642c9f6d7aeb53117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2becb12479d0183424cd95ee5461073035f4469f479a2e2642c9f6d7aeb53117", kill_on_drop: false }`
[INFO] [stdout] 2becb12479d0183424cd95ee5461073035f4469f479a2e2642c9f6d7aeb53117
[INFO] checking ctrem-0.1.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate ctrem 0.1.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate ctrem 0.1.4 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 crates.io crate ctrem 0.1.4
[INFO] finished tweaking crates.io crate ctrem 0.1.4
[INFO] tweaked toml for crates.io crate ctrem 0.1.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate ctrem 0.1.4 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 71e78b81d6e2094362bf6c28543b98210d50a61b76584a2cbfd72f8c6a61ae9c
[INFO] running `Command { std: "docker" "start" "-a" "71e78b81d6e2094362bf6c28543b98210d50a61b76584a2cbfd72f8c6a61ae9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71e78b81d6e2094362bf6c28543b98210d50a61b76584a2cbfd72f8c6a61ae9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71e78b81d6e2094362bf6c28543b98210d50a61b76584a2cbfd72f8c6a61ae9c", kill_on_drop: false }`
[INFO] [stdout] 71e78b81d6e2094362bf6c28543b98210d50a61b76584a2cbfd72f8c6a61ae9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ba4f2270f0294f4a97d25dadfcad6fea497662dd21113dc909151a8cc1245383
[INFO] running `Command { std: "docker" "start" "-a" "ba4f2270f0294f4a97d25dadfcad6fea497662dd21113dc909151a8cc1245383", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking ctrem v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `cformat`
[INFO] [stdout]    --> src/lib.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 | macro_rules! cformat {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprint`
[INFO] [stdout]    --> src/lib.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 | macro_rules! cprint {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprintln`
[INFO] [stdout]    --> src/lib.rs:178:14
[INFO] [stdout]     |
[INFO] [stdout] 178 | macro_rules! cprintln {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cformat`
[INFO] [stdout]    --> src/lib.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 | macro_rules! cformat {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprint`
[INFO] [stdout]    --> src/lib.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 | macro_rules! cprint {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `cprintln`
[INFO] [stdout]    --> src/lib.rs:178:14
[INFO] [stdout]     |
[INFO] [stdout] 178 | macro_rules! cprintln {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprint` is never used
[INFO] [stdout]    --> src/lib.rs:288:8
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn cprint(val: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprintln` is never used
[INFO] [stdout]    --> src/lib.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn cprintln(val: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprint` is never used
[INFO] [stdout]    --> src/lib.rs:288:8
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn cprint(val: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cprintln` is never used
[INFO] [stdout]    --> src/lib.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn cprintln(val: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "ba4f2270f0294f4a97d25dadfcad6fea497662dd21113dc909151a8cc1245383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4f2270f0294f4a97d25dadfcad6fea497662dd21113dc909151a8cc1245383", kill_on_drop: false }`
[INFO] [stdout] ba4f2270f0294f4a97d25dadfcad6fea497662dd21113dc909151a8cc1245383